Lately when I've been on, which isn't much or often, I've been a hippo.
Awesome. FH needs more hippopotamus characters.
I tend to play most often as my in-game persona/fursona, Abomine (she's in my signature). When I'm not playing as Abomine, I'm playing as various antelope, deer, rabbit, or bear characters. I've recently taken a liking to a female Nile crocodile character I made for stuff 'n' giggles, and a California condor character I made to nom on those "Elk Carcass" characters I see now and then in Bonfire.
I'm rarely seen in-game as an actual canine or feline character. I have a hellhound character named Balthazar whose homebase is in Sky's Rim, but I hardly play as him anymore.