ok, so no matter what animal we're talking about- dogs, cats, rats, birds...there is that unspoken rule that you should *never* buy from pet shops (because of animal mills, backyard breeders, ect.). I'm looking for a very young female to keep my hand-raised baby company (she's almost 6 weeks old and has never seen another rat). i've checked all the local classifieds/papers/breeders/rescues, and none of them have babies available. so would it be ok to buy one from a pet shop? i don't want to encourage rat mills or BYBs but Cas is desperate for a friend :/ also, is there any difference between petshop rats and breeder's rats? i assume the PS rats would just be less fancy.