diff --git a/data/json/monsters/mammal.json b/data/json/monsters/mammal.json
index 5308227b72008..0f441b869ab95 100644
--- a/data/json/monsters/mammal.json
+++ b/data/json/monsters/mammal.json
@@ -1102,6 +1102,9 @@
     "vision_night": 4,
     "harvest": "dog_small_with_skull",
     "upgrades": { "age_grow": 42, "into": "mon_dog" },
+    "zombify_into": "",
+    "anger_triggers": [  ],
+    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
     "extend": { "flags": [ "NO_BREED", "SMALL_HIDER" ] },
     "delete": { "flags": [ "CORNERED_FIGHTER" ] }
   },
@@ -1118,82 +1121,24 @@
     "melee_skill": 4,
     "melee_dice_sides": 2,
     "melee_damage": [ { "damage_type": "cut", "amount": 6 } ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
     "vision_night": 4,
     "harvest": "dog_with_skull_leather",
     "reproduction": { "baby_monster": "mon_dog_bull_pup", "baby_count": 7, "baby_timer": 300 },
-    "//": "7 puppies and 300-320 days per-litter for size medium canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "PET_MOUNTABLE",
-      "HEARS",
-      "HIT_AND_RUN",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "CORNERED_FIGHTER",
-      "EATS"
-    ]
+    "//": "7 puppies and 300-320 days per-litter for size medium canines"
   },
   {
     "id": "mon_dog_bull_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "bulldog puppy", "str_pl": "bulldog puppies" },
     "description": "An adorable, defenseless American bulldog puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
-    "volume": "750 ml",
-    "weight": "1 kg",
     "hp": 12,
     "speed": 88,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
     "aggression": -11,
-    "morale": 8,
     "melee_skill": 1,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
     "melee_damage": [ { "damage_type": "cut", "amount": 3 } ],
-    "stomach_size": 150,
     "vision_night": 3,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "harvest": "dog_small_with_skull",
-    "path_settings": { "max_dist": 10 },
-    "upgrades": { "age_grow": 42, "into": "mon_dog_bull" },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "upgrades": { "age_grow": 42, "into": "mon_dog_bull" }
   },
   {
     "id": "mon_dog_pitbullmix",
@@ -1212,79 +1157,20 @@
     "extend": { "special_attacks": [ [ "LUNGE", 5 ] ] },
     "harvest": "dog_with_skull_leather",
     "reproduction": { "baby_monster": "mon_dog_pitbullmix_pup", "baby_count": 4, "baby_timer": 270 },
-    "//": "1-4 puppies & 270 days per-litter for size small canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "PET_MOUNTABLE",
-      "HEARS",
-      "HIT_AND_RUN",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "CORNERED_FIGHTER"
-    ]
+    "//": "1-4 puppies & 270 days per-litter for size small canines"
   },
   {
     "id": "mon_dog_pitbullmix_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "pit bull puppy", "str_pl": "pit bull puppies" },
     "description": "An adorable, defenseless pit bull puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
-    "volume": "750 ml",
-    "weight": "1 kg",
-    "harvest": "dog_small_with_skull",
     "hp": 7,
     "speed": 88,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
     "aggression": -12,
     "morale": 6,
-    "melee_skill": 2,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
     "melee_damage": [ { "damage_type": "cut", "amount": 3 } ],
-    "dodge": 1,
-    "stomach_size": 150,
-    "vision_night": 4,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "path_settings": { "max_dist": 10 },
-    "upgrades": { "age_grow": 42, "into": "mon_dog_pitbullmix" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "upgrades": { "age_grow": 42, "into": "mon_dog_pitbullmix" }
   },
   {
     "id": "mon_dog_beagle",
@@ -1305,85 +1191,20 @@
     "fear_triggers": [ "HURT" ],
     "reproduction": { "baby_monster": "mon_dog_beagle_pup", "baby_count": 4, "baby_timer": 270 },
     "//": "1-4 puppies & 270 days per-litter for size tiny canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "GROUP_MORALE",
-      "HARDTOSHOOT",
-      "PET_MOUNTABLE",
-      "HEARS",
-      "HIT_AND_RUN",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "SWARMS",
-      "WARM",
-      "CORNERED_FIGHTER",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "extend": { "flags": [ "HARDTOSHOOT", "SMALL_HIDER" ] }
   },
   {
     "id": "mon_dog_beagle_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "beagle puppy", "str_pl": "beagle puppies" },
     "description": "An adorable, defenseless beagle puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
-    "volume": "750 ml",
-    "weight": "1 kg",
     "hp": 4,
     "speed": 88,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
-    "aggression": -13,
-    "morale": 8,
-    "melee_skill": 1,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
-    "melee_damage": [ { "damage_type": "cut", "amount": 1 } ],
-    "dodge": 1,
     "stomach_size": 100,
-    "vision_night": 4,
     "harvest": "dog_tiny_with_skull",
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "path_settings": { "max_dist": 10 },
     "upgrades": { "age_grow": 42, "into": "mon_dog_beagle" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "GROUP_MORALE",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "SWARMS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "extend": { "flags": [ "HARDTOSHOOT" ] }
   },
   {
     "id": "mon_dog_bcollie",
@@ -1400,81 +1221,22 @@
     "dodge": 4,
     "extend": { "special_attacks": [ [ "LUNGE", 5 ], { "type": "leap", "cooldown": 8, "max_range": 2 } ] },
     "reproduction": { "baby_monster": "mon_dog_bcollie_pup", "baby_count": 4, "baby_timer": 270 },
-    "//": "1-4 puppies & 270 days per-litter for size small canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "CLIMBS",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "PET_MOUNTABLE",
-      "HEARS",
-      "HIT_AND_RUN",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "CORNERED_FIGHTER",
-      "EATS"
-    ]
+    "//": "1-4 puppies & 270 days per-litter for size small canines"
   },
   {
     "id": "mon_dog_bcollie_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "border collie puppy", "str_pl": "border collie puppies" },
     "description": "An adorable, defenseless Border Collie puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
-    "volume": "750 ml",
-    "weight": "1 kg",
     "hp": 5,
     "speed": 130,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
     "aggression": -12,
     "morale": 5,
-    "melee_skill": 2,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
     "melee_damage": [ { "damage_type": "cut", "amount": 2 } ],
     "dodge": 2,
     "stomach_size": 100,
-    "vision_night": 4,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "harvest": "dog_small_with_skull",
-    "path_settings": { "max_dist": 10 },
-    "upgrades": { "age_grow": 42, "into": "mon_dog_bcollie" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "upgrades": { "age_grow": 42, "into": "mon_dog_bcollie" }
   },
   {
     "id": "mon_dog_boxer",
@@ -1498,58 +1260,15 @@
   {
     "id": "mon_dog_boxer_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "boxer puppy", "str_pl": "boxer puppies" },
     "description": "An adorable, defenseless boxer puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
     "diff": 3,
-    "volume": "750 ml",
-    "weight": "1 kg",
     "hp": 7,
-    "speed": 98,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
     "aggression": -12,
-    "morale": 8,
-    "melee_skill": 2,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
     "melee_damage": [ { "damage_type": "cut", "amount": 2 } ],
-    "dodge": 1,
-    "stomach_size": 150,
     "vision_night": 3,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "harvest": "dog_small_with_skull",
-    "path_settings": { "max_dist": 10 },
-    "upgrades": { "age_grow": 42, "into": "mon_dog_boxer" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "PET_MOUNTABLE",
-      "GROUP_MORALE",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "SWARMS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "upgrades": { "age_grow": 42, "into": "mon_dog_boxer" }
   },
   {
     "id": "mon_dog_chihuahua",
@@ -1571,83 +1290,30 @@
     "vision_night": 6,
     "harvest": "dog_tiny_with_skull",
     "fear_triggers": [ "HURT" ],
-    "delete": { "zombify_into": "mon_zombie_dog" },
+    "zombify_into": "",
+    "extend": { "flags": [ "HARDTOSHOOT", "SMALL_HIDER" ] },
     "reproduction": { "baby_monster": "mon_dog_chihuahua_pup", "baby_count": 3, "baby_timer": 240 },
-    "//": "1-3 puppies & 240 days per-litter for size tiny canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HARDTOSHOOT",
-      "HEARS",
-      "HIT_AND_RUN",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "//": "1-3 puppies & 240 days per-litter for size tiny canines"
   },
   {
     "id": "mon_dog_chihuahua_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "Chihuahua puppy", "str_pl": "Chihuahua puppies" },
     "description": "An adorable, defenseless Chihuahua puppy.  Much safer to tame than an adult dog.",
     "default_faction": "dog_small",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
     "volume": "500 ml",
     "weight": "500 g",
     "hp": 2,
     "speed": 88,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
     "aggression": -11,
     "morale": 4,
     "melee_skill": 1,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
-    "melee_damage": [ { "damage_type": "cut", "amount": 1 } ],
-    "dodge": 1,
     "stomach_size": 100,
     "vision_night": 5,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
     "harvest": "mammal_tiny",
-    "path_settings": { "max_dist": 10 },
     "upgrades": { "age_grow": 42, "into": "mon_dog_chihuahua" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HARDTOSHOOT",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "extend": { "flags": [ "HARDTOSHOOT" ] }
   },
   {
     "id": "mon_dog_dachshund",
@@ -1666,86 +1332,26 @@
     "vision_night": 6,
     "fear_triggers": [ "HURT" ],
     "harvest": "dog_small_with_skull_leather",
-    "delete": { "zombify_into": "mon_zombie_dog" },
+    "zombify_into": "",
+    "extend": { "flags": [ "STUMBLES", "SMALL_HIDER", "HARDTOSHOOT" ] },
     "reproduction": { "baby_monster": "mon_dog_dachshund_pup", "baby_count": 4, "baby_timer": 270 },
-    "//": "1-4 puppies & 270 days per-litter for size small canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HARDTOSHOOT",
-      "HEARS",
-      "PET_MOUNTABLE",
-      "HIT_AND_RUN",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "STUMBLES",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "//": "1-4 puppies & 270 days per-litter for size small canines"
   },
   {
     "id": "mon_dog_dachshund_pup",
     "type": "MONSTER",
-    "name": { "str": "dachshund puppy", "str_pl": "dachshund puppies" },
-    "bodytype": "dog",
-    "description": "An adorable, defenseless dachshund puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
-    "volume": "750 ml",
-    "weight": "1 kg",
-    "hp": 3,
-    "speed": 88,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
-    "aggression": -12,
-    "morale": 5,
-    "melee_skill": 1,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
-    "melee_damage": [ { "damage_type": "cut", "amount": 1 } ],
-    "dodge": 1,
-    "stomach_size": 100,
-    "vision_night": 5,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "harvest": "dog_tiny_with_skull",
-    "path_settings": { "max_dist": 10 },
-    "upgrades": { "age_grow": 42, "into": "mon_dog_dachshund" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HARDTOSHOOT",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "STUMBLES",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "copy-from": "mon_dog_pup",
+    "name": { "str": "dachshund puppy", "str_pl": "dachshund puppies" },
+    "description": "An adorable, defenseless dachshund puppy.  Much safer to tame than an adult dog.",
+    "hp": 3,
+    "aggression": -12,
+    "morale": 5,
+    "melee_skill": 1,
+    "stomach_size": 100,
+    "vision_night": 5,
+    "harvest": "dog_tiny_with_skull",
+    "upgrades": { "age_grow": 42, "into": "mon_dog_dachshund" },
+    "extend": { "flags": [ "STUMBLES", "HARDTOSHOOT" ] }
   },
   {
     "id": "mon_dog_gshepherd",
@@ -1761,80 +1367,23 @@
     "melee_damage": [ { "damage_type": "cut", "amount": 6 } ],
     "vision_night": 6,
     "extend": { "special_attacks": [ [ "LUNGE", 5 ] ] },
+    "delete": { "flags": [ "HIT_AND_RUN" ] },
     "reproduction": { "baby_monster": "mon_dog_gshepherd_pup", "baby_count": 7, "baby_timer": 300 },
-    "//": "1-7 puppies & 300-320 days per-litter for size medium canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "PET_MOUNTABLE",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "CORNERED_FIGHTER",
-      "EATS"
-    ]
+    "//": "1-7 puppies & 300-320 days per-litter for size medium canines"
   },
   {
     "id": "mon_dog_gshepherd_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "German shepherd puppy", "str_pl": "German shepherd puppies" },
     "description": "An adorable, defenseless German Shepherd puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
-    "volume": "750 ml",
-    "weight": "1 kg",
     "hp": 9,
-    "speed": 98,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
     "aggression": -12,
     "morale": 5,
-    "melee_skill": 2,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
     "melee_damage": [ { "damage_type": "cut", "amount": 3 } ],
-    "dodge": 1,
-    "stomach_size": 150,
     "vision_night": 5,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "harvest": "dog_small_with_skull",
-    "path_settings": { "max_dist": 10 },
     "upgrades": { "age_grow": 42, "into": "mon_dog_gshepherd" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "delete": { "flags": [ "HIT_AND_RUN" ] }
   },
   {
     "id": "mon_dog_gpyrenees",
@@ -1857,81 +1406,22 @@
     "stomach_size": 650,
     "harvest": "mammal_fur_canis",
     "reproduction": { "baby_monster": "mon_dog_gpyrenees_pup", "baby_count": 7, "baby_timer": 320 },
-    "//2": "1-7 puppies & 300-320 days per-litter for size medium canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "PET_MOUNTABLE",
-      "HEARS",
-      "HIT_AND_RUN",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "CORNERED_FIGHTER",
-      "EATS"
-    ]
+    "//2": "1-7 puppies & 300-320 days per-litter for size medium canines"
   },
   {
     "id": "mon_dog_gpyrenees_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "Great Pyrenees puppy", "str_pl": "Great Pyrenees puppies" },
     "description": "An adorable, defenseless Great Pyrenees puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
-    "volume": "750 ml",
-    "weight": "1 kg",
     "hp": 10,
     "speed": 65,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
     "aggression": -12,
     "morale": 5,
-    "melee_skill": 2,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
     "melee_damage": [ { "damage_type": "cut", "amount": 3 } ],
-    "dodge": 1,
     "stomach_size": 200,
     "vision_night": 5,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "harvest": "dog_small_with_skull",
-    "path_settings": { "max_dist": 10 },
-    "upgrades": { "age_grow": 42, "into": "mon_dog_gpyrenees" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "upgrades": { "age_grow": 42, "into": "mon_dog_gpyrenees" }
   },
   {
     "id": "mon_dog_rottweiler",
@@ -1954,80 +1444,21 @@
     "harvest": "dog_with_skull_leather",
     "extend": { "special_attacks": [ [ "LUNGE", 5 ] ] },
     "reproduction": { "baby_monster": "mon_dog_rottweiler_pup", "baby_count": 7, "baby_timer": 300 },
-    "//2": "1-7 puppies & 300-320 days per-litter for size medium canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "PET_MOUNTABLE",
-      "HEARS",
-      "HIT_AND_RUN",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "CORNERED_FIGHTER",
-      "EATS"
-    ]
+    "//2": "1-7 puppies & 300-320 days per-litter for size medium canines"
   },
   {
     "id": "mon_dog_rottweiler_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "rottweiler puppy", "str_pl": "rottweiler puppies" },
     "description": "An adorable, defenseless Rottweiler puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
-    "volume": "750 ml",
-    "weight": "1 kg",
     "hp": 11,
-    "speed": 88,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
     "aggression": -11,
     "morale": 4,
-    "melee_skill": 2,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
     "melee_damage": [ { "damage_type": "cut", "amount": 3 } ],
-    "dodge": 1,
     "stomach_size": 200,
     "vision_night": 5,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "harvest": "dog_small_with_skull",
-    "path_settings": { "max_dist": 10 },
-    "upgrades": { "age_grow": 42, "into": "mon_dog_rottweiler" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "upgrades": { "age_grow": 42, "into": "mon_dog_rottweiler" }
   },
   {
     "id": "mon_dog_auscattle",
@@ -2046,81 +1477,22 @@
     "vision_night": 6,
     "extend": { "special_attacks": [ [ "LUNGE", 5 ], { "type": "leap", "cooldown": 8, "max_range": 2 } ] },
     "reproduction": { "baby_monster": "mon_dog_auscattle_pup", "baby_count": 4, "baby_timer": 270 },
-    "//": "1-4 puppies & 270 days per-litter for size small canines",
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CLIMBS",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "PET_MOUNTABLE",
-      "HEARS",
-      "HIT_AND_RUN",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "CORNERED_FIGHTER",
-      "EATS"
-    ]
+    "//": "1-4 puppies & 270 days per-litter for size small canines"
   },
   {
     "id": "mon_dog_auscattle_pup",
     "type": "MONSTER",
+    "copy-from": "mon_dog_pup",
     "name": { "str": "cattle dog puppy", "str_pl": "cattle dog puppies" },
     "description": "An adorable, defenseless Australian cattle dog puppy.  Much safer to tame than an adult dog.",
-    "default_faction": "dog",
-    "bodytype": "dog",
-    "categories": [ "WILDLIFE" ],
-    "species": [ "MAMMAL" ],
-    "volume": "750 ml",
-    "weight": "1 kg",
     "hp": 5,
     "speed": 130,
-    "material": [ "flesh" ],
-    "symbol": "d",
-    "color": "light_gray",
     "aggression": -12,
     "morale": 5,
-    "melee_skill": 2,
-    "melee_dice": 1,
-    "melee_dice_sides": 1,
     "melee_damage": [ { "damage_type": "cut", "amount": 3 } ],
     "dodge": 2,
-    "stomach_size": 150,
     "vision_night": 5,
-    "families": [ "prof_intro_biology", "prof_physiology" ],
-    "harvest": "dog_small_with_skull",
-    "path_settings": { "max_dist": 10 },
-    "upgrades": { "age_grow": 42, "into": "mon_dog_auscattle" },
-    "biosignature": { "biosig_item": "feces_dog", "biosig_timer": 6 },
-    "fear_triggers": [ "FRIEND_ATTACKED", "FRIEND_DIED", "HURT" ],
-    "special_attacks": [ [ "EAT_FOOD", 100 ] ],
-    "petfood": {
-      "food": [ "DOGFOOD" ],
-      "feed": "The %s seems to like you!  It lets you pat its head and seems friendly.",
-      "pet": "The %s happily wags its tail while you pat its head."
-    },
-    "flags": [
-      "ANIMAL",
-      "DOGFOOD",
-      "CANPLAY",
-      "CAN_BE_CULLED",
-      "HEARS",
-      "KEENNOSE",
-      "PATH_AVOID_DANGER",
-      "SEES",
-      "SMELLS",
-      "WARM",
-      "EATS",
-      "SMALL_HIDER"
-    ]
+    "upgrades": { "age_grow": 42, "into": "mon_dog_auscattle" }
   },
   {
     "id": "mon_dog_samoyed",
@@ -2134,8 +1506,7 @@
     "aggression": -20,
     "stomach_size": 650,
     "reproduction": { "baby_monster": "mon_dog_samoyed_pup", "baby_count": 4, "baby_timer": 270 },
-    "//": "1-4 puppies & 270 days per-litter for size small canines",
-    "delete": { "flags": [ "GROUP_MORALE", "SWARMS" ] }
+    "//": "1-4 puppies & 270 days per-litter for size small canines"
   },
   {
     "id": "mon_dog_samoyed_pup",
@@ -2145,8 +1516,7 @@
     "description": "An adorable, defenseless Samoyed puppy.  Much safer to tame than an adult dog.",
     "aggression": -30,
     "stomach_size": 200,
-    "upgrades": { "age_grow": 42, "into": "mon_dog_samoyed" },
-    "extend": { "flags": [ "NO_BREED" ] }
+    "upgrades": { "age_grow": 42, "into": "mon_dog_samoyed" }
   },
   {
     "id": "mon_fox_gray",