I have two pups. An 11 year old Lab/border collie and an 8 month old lab/mix Pit bull??? We've had him since February. Put our older 16 year old down in January. The 11 year old loves this pup most of the times. She was not the alpha dog with the older one. I was hoping she would be with the puppy, however, when she asserts herself and gets mad at him, he comes right back at her. They sound like they're in a horrible fight with neither backing down. I can't tell whether the puppy thinks he's playing or not. He's shown his teeth to me and growled when he was younger and never did submit like he knew I was the alpha dog. I want to nip this sooner rather than later.
There's lots of issues with this little guy. We just had him neutered hoping it would help. The other thing he does is when people come in the house, especially when I come home, he nips and mouths and bites your clothes. I've tried crying out ouch, turning my back to ignore which is just jumps on my back. I also feel bad because the old gal just sits there waiting for my attention. Any ideas would help. As I said, I've tried some of the things in the book but nothing is working yet.