hi i got 2 shih tzus and toy poodle and frankie a yorkie..
frankie.when i first got him he is 6 months old.and he did like your dog jack.when i took him out to pee or poo.he will not do it and came back inside and did it.i am upset about that but let it go .and keep try to talk hom outside to pee and poo.took him 2 months and now he is ok .he did his think outside now..