Well, as some of you know, I brought a home 2 months ago. I have a TON of space and I always told myself, if I brought a house, I'd adopt a shelter dog. So here is my situation. I have Sonny, my 4 year old Cockapoo. He is EXTREMELY territorial and he just doesn't get along with most dogs. He has been this way ever since my sister's dog literally tried to kill him as a puppy. So, Sonny isn't receptive to new dogs..... Can this be repaired and how should I go about fixing this? I've never cared for a small dog in my life. Growing up, I had Pit Bulls, Mastiffs, and English Bulldogs; we usually had 2-3 dogs at a time, so raising 2 dogs isn't hard for me. They never were dog aggresive because they just looked so intimidating, especially my old Mastiff Vinny. That dog was just amazing... He was like a mini horse lol. With Sonny, he goes into Cujo mode around other dogs; I've tried to correct the problem but it's not working. So... I won't adopt a dog if Sonny doesn't get along with him. I made a committment to him and I'll keep him safe for his entire life. BUT, I'd like to share my home and life with a shelter dog if possible. Any advice?