[@RokkuHoshi] Well as Carla said in the OP, it affects people differently. Imagine what your character looked like before the experiment, as a pure human. From that you add traits of your animal. For a lion I would probably add the ears, eyes, mane, claws, tail, maybe fur on the back. How drastic the changes are vary. Some characters didn't change much, then others now appear more animal than human.