Uhh...
Annie 155?
My first "true" pet (that I actually remembered. Goldfish don't really count if they only last a week) was a female cat. Yeah. I also lived on 155th street. More yeah.
My first pet with a "unisex" name was a female rabbit named Marshmallow. IDK why I picked that, she was gray. I lived (and live) in Portland (Oregon, ftw), so... Marshmallow Portland? Sounds like a hipster band whatever...