A friend of mine has a fat, spoiled, indolent Siamese cat, and I put on an effete, supercilious accent of an ivy-league snob for it.
"You silly girl, why don't you feed me the beluga caviar the way the Vanderbilts did?

Yes, my cat's name is Snarf. So he sounds like Snarf from the Thundercats.

I don't have pets. But I do a specific voice for babies. It's like some odd deep street eastern European / Russian type thing for some reason. And I normally say stuff like "Ay! You! Wha-tis you doin', yo?"

Actually, my wife does it. I just have to suffer through it, and the dog does too. I'm pretty sure he's like, "My voice wouldn't be that high pitched and squeeky." Otherwise, it fits the bill.

OMG I've got voices for our dog and all the cats!!! Daily converstions with them!!

I don't have a pet right now, but the kitty I once had had so much catchphrases. I mean, LOTS. Plus, she opened doors so... yeah. that.

YES!! My cats name is in Spanish, its 'Pelusa', which means 'lint ball', and whenever I'm angry at her I call he PeLOSER. She's cute, but she's really mean.

my pets already have their own voices, literally; they're african grey parrots. boy do i miss them :`(

Nope ...LIKE A BOSS!

No, but I'd sing their names to them.