3 Problems - 1 Puppy... Can you help?

All 3 of these problems can be solved by fixing problem 1. You need to explain to your partner that this dogs behavior is unacceptable. Is it your partners dog or your dog? If it is your dog you need to train him by himself away from the other dog. Simple solution if it is your dog to. Your partner should have nothing to do with the training of your dog, don't let him give your dog treats. If it is your partners dog explain to him that the dogs behavior is unacceptable and he needs to do something about it. Petsmart/Petco have training cles for only $100. Good luck!