You are offered to become some kind of half-animal person, along the lines of a Satyr or Centaur, but you have to pick: a bipedal lower body, akin to a Satyr, or a quadrupedal lower body like a Centaur. What animal would you want the half to be? What lower body would you pick, or do you feel like your choice of animal would force you to pick one option or the other? Would you want your upper body to be fully human, or influenced by your animal of choice somehow?