Adoptable Change When Leveled.
 

Is there a way to make what the adoptable is called change when they level up? For instance, level 1 "Caterpillar", level 2 "Cocoon", level 3 "Butterfly".

I don't want to give away what the pet would become until it levels. But the beginning stage isn't always the same thing as the last level.

AKA: A horse will always be a horse, but a bird starts out as an egg. Or, like above, a caterpillar doesn't stay a caterpillar. It becomes a butterfly.