Cats: Paul, Persian. Paul after various Pauls, and Persian after the Pokemon.
Rabbit: Bunnicula. After the kids book. He's got the same fur patterns as the bunny in the book.
Pigeons: Fred, Walter. Fred after various Freds, namely my grandfather, Walter after Walter Pidgeon.
Bantam Hen: Spike. Her feathers have a spikey pattern, and her personality is that of a miniature giant death urchin.
Hermit Crabs: Howard, Steve, Richard, David, Marc. Richard after my bessie bud, and the rest most people here can guess.
Dogs: Ballpark Frank and Boo. Ballpark is a Daschund so you can see where we went with that, and Boo... idk idk idk. I avoid her.
I declare myself winner of the pet contest as of now, and award myself one internet.