we rescued another Pomeranian a few months ago. i acts like he may have been abused but probably most likely just a regular pomeranian that was overly babied. if you brushed him, he would scream like you were ripping his hair out, same with clipping his nails. we finally got him over that and his confidence was coming up and he was becoming a really good dog. two weeks ago, we dog sit for a friend of my wifes while they went on vacation. she had a GSD that had no confidence in himself. he was scared aggressive and bluff charged baring his teeth and such all the time. his confidence came up during his time with my 2 GSDs and he went home a much better dog. they also had a 12yo golden retriever but he seems on the verge of the crossover but was a very sweet dog. their 3rd dog was a chiuaua that really had no house manners and was obviously babied to the point that he really could do no wrong. my rescue pomeranian picked up a few habits from the chiuaua and quit going outside for anything. he goes to the bathroom in my spare bedroom. if you would call him to go outside, he would turn and run into the bedroom and try to hide from me. so i started following him to the bedroom and then carrying him outside. he still will wait until he comes in to go pee in the spare room. my wife tried to correct him and he bit her, not just a nip but actually tore skin off her hand. she obviously is starting to be scared of him and he knows it. i guess im too used to big dogs and the dominance side of body language and such instead of spanking them or whatever. i immediately picked him up after he bit my wife and he bit me twice and peed down my sleeve. i put him outside for awhile. he came in a pooped on the floor. while i was at work, he did the same kind of things again but this time my wife grabbed hm like i showed her so he couldnt bite her again. instead of biting her, and he tried, he pooped on himself and started foaming at the mouth. we did start kenneling him up at night again as we dont trust him by himself and he wont go in the kennel. ive been letting him out straight from the kennel and hes been going out with the rest of the dogs but he still pees as soon as he comes in the house. this is all happening just in the last week after the other dogs left. i cant explain it. my wife is getting very frustrated and starting to talk about getting rid of him but i cant knowingly give him to anyone else as a biter. i know this was a long rant but hopefully someone with more small dog experience can give some insight? this rescue is 4yo. we do have another 6yo pomeranian that my wife has had since he was a puppy but he doesnt seem to act like the usual pomeranian. hes very calm and she uses him as a therapy dog in nursing homes and childrens hospitals. all of our other dogs have been GSDs.