About this pet

Frank is one of the most gentle, sweet and loving dogs Ive ever met. He truly is the dream dog, but unfortunately, he is not doing well with my other dog and gets aggressive. The aggression seems to be triggered when my other dog is trying to be playful. Ive taken Frank for x-rays and scans and they dont see any signs of hip dysplasia, but we do believe he has minimal pain because he wont jump in the back of the truck anymore. Frank was a rescue so we dont know his exact age. Its expected to be around six or seven. I dont know much about Franks backstory other than he was an only dog and that may be why hes not adjusting, we believe Frank should be the only dog in the home. He is very well trained in obedience.