Petpets aren't generally considered to be ETS unless they're avvie petpets, and even then, there's not exactly a good market. =/ Are you considering taking the petpet slot in a mall?
Depends how much you're trying to transfer. Be careful about that, though, because AAers can be programmed to pick up pets with expensive petpets. Meowclops works well, I'm sure. Avvie petpet, so it's not all that difficult to sell off.