you were Carlisles daemon (the other part of his soul/companion) you didn’t chose what animal form you wanna take so you take multiple but never human one’s because Carlisle is the human/vampire. if he died you die and it works both ways, he can only hear you speak.everyone else hears animal noises

He was trying to keep Bella and edwards child safe+her daemon as they wanted to kill the kid for being an ‘immortal child’

Carlisle:she is no threat! I assure you!

you stood beside him ready