Is it normal that i like to pretend i'm an animal?

I like to pretend to be an animal with my partner. Sort of doglike but just animal-like in general. It isn't just sexual, she takes care of me, too. Actually, most of it isn't sexual. She takes me to the park and scratches behind my ears and it's really a state of mind that I get into that I find it difficult to force myself out of. The sex is a big part of it, too because I always feel really stupid in the headspace, so I also feel really careless. I only know what I want. At first she felt weird about having sex with me in the headspace, but she warmed up to it seeing that I am still capable of nonverbal or implied consent, and it isn't like sleeping with an animal.