He thought that this was hysterical. I did not. He recently has started to hit the dogs when he gets angry. At this point your dog will probably be used to the baby and will react appropriately. There is usually more danger to the dog than to the toddler.
Toddlers are rough and can really hurt a dog.
Be particularly concerned with smaller more fragile breeds. Use whatever methods work best with your little one. Always keep in mind that a toddler will copy what you do. This may be the best way to teach them to respect your dog. A word about playgroups.