Looking for any game recommendations where your character either is, or becomes an animal over the course of the game. Rather than just a simple furry transformation, it would go further than that.
Cattle Castle 1 and 2 have the main character turning into feral cow over the course of the game.
First one is free on itchio, while second one is here: https://f95zone.to/threads/cattle-castle-2-v1-3-3-fungaldragon.90703/
Also I think there is something like that in Flexible Survival.