Aggressive standard poodle puppy
Hello, I bought both my standard poodle and doberman pinscher puppies December 5th. My poodle is older than the dobey by almost 3 weeks (we picked the dobey up at 5 weeks, basically rescued him..). My poodle was fine with him at first but now every she sees him she charges at him and won't stop nipping at him and causing him to fall over on his back. I try holding her back a few times but she goes right back to nipping and growling at him. Even if he cries she does not stop. I've tried separating them but it keeps happening. Please help me, I need to know how to fix this asap. I don't want them fighting constantly and definitely don't want the dobey learning that other dogs are mean. Thank you in advance.