answer:One of my best friends has a 9 month old female purebred Doberman. She’s….. psycho. It’s probably partly because she’s a puppy. She’s SOOO hyper and out of control. I’ll admit it’s partly my friends fault too. Because of work and school she doesn’t have much time to take her to the park or anything, so any exercise the dog gets is in the backyard (which is big enough to run and play in, but not like an open field where she can really release her energy). She also never went to or had any actual puppy training. She knows how to sit, but she doesn’t know how to stay. She also gets so excited sometimes that she jumps up on people or runs around the house knocking everything over. She doesn’t understand no, she chews up everything, she begs at the table, she jumps on people whenever she wants…. she’s just a terror. I hate that dog. Good luck with yours. Maybe if you take him out and train him to mind, he’ll be much better. I really really really really hope you end up with a better experience. And maybe since he has some injuries, he’ll be less rambunctious.