Help. I don't know what else to do. My son just turned 2 and our dog is 13. My son LOVES animals and dogs but is so rough with the old guy. My son jumps on him and runs full force into him knocking him down. He has bad hips so sometimes he can't get back up easily or unassisted. He stands on his head and pulls on his legs and uses him as a stool to get on the couch. He's a golden retriever so he just takes the beating and doesn't try to bite him. He's such a good dog. He won't go outside or stay in the garage or in any other room. I've tried time out. I've tried removing him from the dog. I've tried yelling. I've tried showing him how to be nice to the dog and correcting him when he's being too rough. Yesterday he walked over to my mom and the dog just happened to slip at the same time. My son said "oh no sorry!" Even though he didn't do it. But when he does it on purpose he just laughs and giggles. I know he thinks he's playing with the dog but he's too rough and I know it won't be long before he really hurts the dog or kills him. I honestly don't know what else to do. Please help!!!