I definitely think that all time with children from now on should be strictly supervised. Make sure that every encounter your dog has with kids is a POSITIVE one, meaning NO kids crawling on him, pulling on him, or being rough. The kids should be taught only to gently pet the dog and offer him treats. If the kids start chasing or hounding him, the playing ends quickly! It does not take much for a dog's teeth to scrape a baby's head, but that does show a lack of bite inhibition. On your part, you should start teaching him to have a gentle mouth by holding treats between your fingers and only allowing him to take the treats if he licks, NOT bites or nibbles it. You should also play tug with his toys and occasionally slide your hand down near his mouth. Even if he accidentally nips you, cry out like you're in pain and end the game to show him that nipping is not tolerated.

You should provide a safe place for your dog, not under the table. Get him a nice, secure plastic crate or a wire crate with a cover and place it in the area of your house where he is most often. Leave the crate door open, so if the dog is stressed, he will instinctively go to his crate for safety. All kids that come to your house need to learn that the crate is a NO-kids zone! If kids go near the crate to harass the dog, they get to leave, or go on a time-out A good behaviorist is also HIGHLY recommended! Even if you think this was an isolated incident, this is serious for you and your dog, if he bites again he is at risk of being euthanized.

Maltese_Love, thats a pretty rude, generalized statement about Chow-Chows. Well-bred Chow's are bred for a steady, calm temperament. Yes, they are a bit more reserved breed, but they are not supposed to be "aggressive". I grew up playing with my friend's 2 very well-bred, beautiful Chows who had totally great temperaments, they would allow us to dress them up and put bows all over them