Suddenly Aggressive towards my 14 year old daughter
My dog is 2 years and 4 months old. He has recently (within the past week) become very aggressive towards my 14 year old daughter. He tends to jump on her back and neck when she is sitting down. And refuses to get off her. When we try to pull him off her he growls at us. And just goes right back to getting on her. He does not hump her leg or anything like that. He has just started demonstrating this behavior ONLY with her?!! Why this sudden behavior? Please help!