My 3.7 year old son bites other kids at daycare (and sometimes us) when he doesn't get what he wants. His speech skill is well developed. He is a happy, social and healthy boy otherwise. We are also happy and calm parents living together. He is the only child and gets all the love, attention and kisses and hugs. He has been biting for a year now on and off.
At daycare, they take action and interfere when it happens by stopping him and removing him from the scene, talking to him asking him to say sorry to the victim. We also do lots of talking and teaching him to use his words and get help from educators. It seems none of these strategies is working. Please share if you had the same experience and any solution you think might work. Thanks heaps.