I know this post is a few days old, but the baby could also have dementia/Canine Cognitive Dysfunction. We had a dog come into our clinic that started to attack her owner(and she was a Chow), we started her on medication and the owner was very pleased that the pet responded and did well up until they put her down for other reasons. The medication was anipryl and here's an article on it. Good luck with your baby.
Anipryl® - Help for Senior Pets?