Lapses in housebreaking, chewing forbidden items, or any other unusual, unacceptable behavior could result from the change in routine. A wet diaper that leaks on the carpet might indicate to your dog that the rules have changed and that eliminating inside is okay. While you'll certainly want to curtail the unacceptable behavior, remember its cause and see if giving a little extra attention helps it disappear. As much as you may trust your dog, never leave child and dog alone together. Children don't know their own strength and could seriously injure the dog, or they could frighten or anger the dog enough that it feels the need to protect itself.
Dogs usually warn a child to stop by growling or showing their teeth.
But children don't understand these signs and won't stop what they're doing. Even the best-natured animal has limits. I learned my lesson the day I left Max and the baby playing on the floor while I worked at a nearby table. I turned to see Max standing in front of the baby with a very funny look on his face. I went over to inspect and discovered that she had two fists full of his hair and was trying to pull herself up by holding onto him.