Size is the overall mass of a unit. It affect other atributes and abilities, primarily health and damage, potentialy increasing them. The sized is ranked from 1 to 10. In some mods, such as Creature Chaos and Tellurian, a size 11 and 12 is added.
If two animals of different sizes are combined, the resulting creature will have the larger size.
Size ranks[]
| Size | Animal(s) |
|---|---|
| 1 | Ant, Archerfish, Bat, Chameleon, Dragonfly, Hornet, Lemming, Lobster, Piranha, Poison Frog, Praying Mantis, Rat, Rattlesnake, Raven, Scorpion |
| 2 | Armadillo, Baboon, Cheetah, Chimpanzee, Coyote, Electric Eel, Mountain Lion, Porcupine, Skunk, Snowy Owl, Spitting Cobra, Warthog, Wolf, Wolverine |
| 3 | Dolphin, Garfish, Gorilla, Grizzly Bear, Hyena, Komodo Dragon, Panther, Polar Bear, Ram, Snapping Turtle, Vulture, Zebra |
| 4 | Eagle, Giraffe, Hammerhead Shark, Kangaroo, Lioness, Musk Ox |
| 5 | Bull, Crocodile, Horse, Tiger, Walrus |
| 6 | Hippopotamus |
| 7 | Great White Shark, Moose, Rhinoceros |
| 8 | Elephant |
| 9 | Killer Whale, Woolly Mammoth |
| 10 | Sperm Whale |