I made this for my character sheet commissions! For when I ask people this question. XD It got really popular on twitter to my surprise (for a random personal guide I made.) This isn't like, 100% accurate anatomy or anything, and there are wayyyy more ways that real animals stand/walk/run etc.... (bats, sloths, seals, whales... etc.) These are just the common ones I get for my character sheet commissions which are usually for costumes so they need to fit over as padding over a human leg. Art is all taken from some of my older character sheets I did.

Stuff on the bottom is just some common examples from real life (well other than "fantasy creatures") and not intended to be ALL species within each category, that would take a lot more than a tiny column. Obviously, your character is what you make of it but these are just examples of what animals are in reality!