Hi,
First off, this is my very first experience having a puppy (although i've had adult dogs before). I just adopted a chi/rat terrier that was taken from his litter very early - at 6 weeks. He is 14 weeks now. So far crate training and house training have all gone well. The problem is with aggression. His nipping and chewing is really becoming a huge problem.
The usual advice of playing the role of the littermate (high pitched yelp and ignoring) doesn't work at all and only excites him more. Holding him down firmly until he calms is equally ineffective. It seems that once he gets into biting mode nothing works other than putting him in his crate. He does this not only to me but to guests as well. Actually, he gets even more wound up and agressive when guests are here. It's gotten so that it's hard to sit on the sofa unless he's in his crate.
For the purpose of context - i live alone, have no other pets, work at home and he has a secure fenced backyard that he plays in. I have a back door that he can come in and out of and I take breaks from work and play tug of war games and fetch games with him several times a day.
What am i doing wrong?
Cindy