I have a 3 year old pitbull that no matter what we do we cant keep in our backyard during potty and play time. We have a 7ft fence so she was jumping the neighbors fence. We then ran the 7 ft along their fence and she learned to climb the tree by the fence. So my husband cut the trees. Then she chewed through the fencing on the gate and climbed through. We doubled fenced the gate and then most recently she has begun going under the fence! We don't know what else to do. We think she was abused at one time because she is the sweetest most loving dog but when she gets out if our neighbors pick something up she becomes aggressive. We have to figure something out we cant have our neighbors living in fear of our dog. We are all completely in love with her so we don't want to have to get rid of her but were running out of options! Please help!!!!!