Just thought I'd jump in to add a bit more.
In Lithic we're not making up any of the animals in game, they are all historical, though long extinct for the most part. We were going to make up fantasy beasts and creatures but as our research went on we found so many things that were unusual or just down right terrifying we thought we'd go for them as they were. We have however given them different names that are drawn from ancient languages that we felt summed them up in a more realistic way than their real names.
Each of the six Spirit Animals embodies one of the six alignment points in Lithic and which a player chooses affects passive and active benefits in game.
The name in brackets is the creatures real name if you want to look them up.
1."Gurstoss"(Deodon). This is the "Aggressive" trait animal, its closest living relative is the horse family. Six foot tall at the shoulder it hunts by charging and ramming its prey.
2."Karawar"(Aurochs) This is the "Unproud" trait animal, it went extinct fairly recently and is essentially very similar to modern cattle.
3."Melghwer"(Megatherium)Is the "Passive" trait animal, about 20 feet long it is a giant herbivorous member of the Sloth family.
4."Nehken"(Smilodon)Is the "Proud" trait animal, the same size as a modern lion and closely related, they are ambush hunters of large prey such as Giant Elk and Mammoths
5."Bhaso"(Thick Billed Raven) Is the "Selfish" trait animal,it is the only one of the six spirit animals that is still alive today and is the largest member of the corvid group of birds with a wingspan of about 3 feet. The work in progress model shown doesn't have its wing finished yet, it can fly.
The sixth spirit animal is the "Waylarth"(Amphicyon) and is the "Selfless" trait animal, a pack hunter from an extinct branch of the same group as Cats,Dogs and Bears, Unfortunately it isn't far enough along to show yet.