You have gotten alot of great information here. The one thing I can say, my daughter had two yorkies, and their behavior sounded alot like what your describing in your baby. I know she seemed to always stay frustrated and angry at them. The more accidents they had, the more she yelled at them . This continued to escalate, they got worse with barking and mischievious behavior, she yelled and put them outside or in the small room they spent the day in while she worked..... It was a cycle that sadly ended up as her not wanting them around at all. Yorkies are very smart at knowing when your upset with them, and it makes them nervous, because they honestly don't have a clue as to what you want from them at the time..they just know your upset. Thats why positive reinforcement works so well in training. I wish you the best with your baby...They bring so much joy and they do want to please you.
