[~Circe~]

I bet they don't even turn fully into animals in the reboot. They just absorb some aspect of them. They may change somewhat but not all the way. With few exceptions such as Tobias' situation. Perhaps the longer they keep an aspect, they continue to change. Changing all the way leaves them stuck.

Either that or the transformations will be blink and you miss it. It's a movie so they're gonna cut corners somewhere.