Have you guys heard of otherkins? There is a tag on Tumblr for otherkin, but I suggest not even going there unless you want to be in a click hole for the rest of the afternoon. Wikipedia says otherkins are “people who identify as partially or entirely non-human. Some say that they are, in spirit if not in body, not human. This is explained by some members of the other kin community as possible through reincarnation, having a non-human soul, ancestry, or symbolic metaphor.”
Meet Nano and her friend Svien from Norway. Nano is an otherkin, and Svien has a personality in his head that is a cat so they are able to communicate through meowing! Nano also says she can see and hear better than most humans, hisses at dogs in public, and sleeps in a sink.