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.
|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|
|7||Great White Shark, Moose, Rhinoceros|
|9||Killer Whale, Woolly Mammoth|