You fall on all fours as your arms and legs form into the limbs of a leopard then you try to stand up on your legs you feel a sharp pain on your throte and you try to speak but your words are scrambled with growls until your voicebox dissappeared and you can no longer talk human then your claws poke out of the base of your fingers and then your fingers fall off then you grow to the size of a leopard. now you are a leopard forever