Help Buddie find the home he needs

We have a beautiful 3 year old Bernese mountain rottweiler mixed dog. His name is Buddie he is very healthy and around 130 lbs, latley has had some behavioral issues Hes protective of his owners and is a very loving and caring dog. We have had Buddie since he was about 5 weeks old. He has grown up with cats which he has no problem with. We are looking for a person or persons that has experience with dogs that has behavioral issues and would prefer that either it's one person or a couple with a yard so he can run, no other animals and someone with out kids. We feel Buddie should have a chance with the right people as he is still a young dog with lots of life left. If you feel Buddie would be a good fit hplease contact us by email with your name contact information and tell us a bit about yourself.. .Thank you