It's said to be 108 species & variations in the game, but I found 110.
107 listed in the net and 3 found by myself (Forest elephant, Roan antelope & Wildebeest)
Mammals
Proboscideans: African bush elephant, Forest elephant, Asian elephant, Woolly mammoth
Carnivores: Lion, White lion, White tiger, Siberian tiger, Cougar, Leopard, Black panther (possibly leopard), Jaguar, Clouded leopard, Cheetah, Smilodon, Snow leopard, Grizzly bear, Polar bear, Asiatic black bear (though it looks totally like American one), Giant panda, Red panda, Raccoon, Meerkat, Black-backed jackal, Northwestern wolf, Raccoon dog, Spotted seal, California sea lion.
Odd-toed ungulates: Black rhinoceros, Quagga, Grevy's zebra, Domestic horse, Pony, Somali wild ass
Even-toed ungulates: Hippo, Pygmy hippo, Reticulated giraffe, Okapi, Moose, Reindeer, Irish elk, Axis deer, Bison, African buffalo, Wildebeest, Bongo, Roan antelope, Gemsbok, Scimitar-horned oryx, Mouflon, Domestic sheep, Domestic goat, Rocky mountain goat, Japanese serow, Bactrian camel, Llama, Alpaca
Primates: Chimpanzee, Western lowland gorilla, Bornean orangutan, Mandrill, Japanese macaque, Lar gibbon, Ring-tailed lemur, Black & white ruffed lemur
Marsupials: Red kangaroo, Eastern grey kangaroo, Swamp wallaby, Koala, Thylacine
Other: Prairie dog, Linnaues' 2-toed sloth, Giant anteater, 3-banded Armadillo
Birds
Ratites: Ostrich, Southern cassowary, Emu, Giant moa
Penguins:Humboldt penguin, King penguin, Western rockhopper penguin
Parrots: Nyasa lovebird, Green-winged macaw, Cockatiel
Raptors: Goshawk, Bald eagle, Steller Sea Eagle, Andean condor
Owls: Snowy owl, Sunda scops owl, Northern hawk owl
"Waterfowl": Shoebill, Grey crowned crane, Sarus crane, Japanese crane, American flamingo, Dalmatian pelican, Great white pelican
Galliformes: Peafowl, White peafowl, Rock ptarmigan, Himalayan monal
Other: Rhinoceros hornbill, Dodo.
Reptiles: American alligator, Gharial, Saltwater crocodile, Komodo dragon, Green iguana, Galapagos tortoise