hi Ozzy, this sweet boy is an approx. 4 year old mix breed. He was surrendered to us with another dog from a commercial breeder when he was no longer wanted. The breeder claims he is a "mini Australian shepherd". Your guess is as good as ours to his true breed mix. He is 20 lbs. Ozzy is such a sweet, gentle pup. While he came to us a bit nervous and shy, he has blossomed into an incredibly happy and social little fellow. He has been great with all of our volunteers, excited to go out to the playyard and just overall a wonderful little guy. He would need to meet any resident dogs. He will come neutered, vaccinated, microchipped and 4dx tested. If you are serious about adoption, please fill out an adoption application on our website www.phoenixanimalrescue.com His adoption fee is $450. Phoenix Animal Rescue Chester Springs, Pa Kennel License #5152