Okay, this is the only game on the list where you're not actually playing as the animal, but I felt it deserved a brief mention anyway. In Dog Feeding Simulator 2014 you play as a human attempting to feed your friend's dog. There are... consequences for not feeding it quickly enough.
There is a reason that the game touts itself as the "scariest dog feeding simulator ever" and that reason is the dog - the dog that slightly resembles poop. I can't be the only person who thinks that.