This happens way to often. New parents don't stop and think. More than likely the dogs were their center of attention until the baby was born. Then they bring the baby home from the hospital and the dogs don't get any of the attention. Had the parents introduced the baby like they would a puppy and taught the dogs this is a new family member, it probably would have never happened. I have rescued some really great dogs that have had this happen to them. Most of the bad behavior by dogs are a result of the owners not paying attention to the warning signs. My heart goes out to the family.