Luckily the worst we have had so far is our dog have a couple accidents in the house since Erica came home. When she was born and we were in the hospital, I had my mom bring a receiving blanket that she was wrapped up in home with her. While she was watching him for us, she just let him sleep with the blanket and snuggle with it and stuff. I think it worked. Maybe you can let your dog snuggle with one of Joshua's blankets after he's used it so she gets more familiar with his scent.
LOL Just make sure to wash it before giving it back to baby. DH almost forgot!!
