Foster has only nipped one time in his life prior to this latest incident and that was when he was a puppy, I just told him no and showed my disapproval and he never did it again. This latest incident was with a group of children and I just looked him straight in the eye and told him to knock it off, which always works with him for any bad behavior. I did not want to scold him in front of a group because he gets embarassed easily and pee's all over the place. I am just afraid that some trait might be coming out and I want to get control over it fast. He has been more submissive lately than usual and I am not sure why. nothing is different except I has to housesit for two weeks recently and did not sleep at home but I still saw him all day.