Hello. Long story here: My mom adopted a dog, now she doesn't want it because he's too hard to deal with. I love the dog and I want to try to take him, rather than him having to go to a shelter. I have a 5 yr old male pug and a 4 yr old female pug and a 7 yr old female cat. The new dog is a 1 yr old male pug. He has lots of energy, which I'm going to deal with by walking him 2 times a day with my other 2...and playing with them all a whole lot. My mother claims that he(the 1 yr old pug) bites her other dog playfully and then gets rougher...I love this dog, he is not aggressive, just too playful. He is crate trained also. Can anyone please tell me how I can make this easier? I don't want my current dogs to be mad about the new one. How do I introduce them? Any help would be great! Thanks so much.