C.L.
When I went through this stage two years ago with my then-two-year-old, I found very helpful an article in the Journal of the National Association for the Education of Young Children caled A New Bit On Toddler Biting: The Influence of Food, Oral Motor Development, and Sensory Activities by Pamela Ramming, Caroline S. Kyger, and Stacy D. Thompson. The USC library has the journal and anyone can access the library (you don't have to be affiliated with USC). In short, the article recommends ensuring that toddlers have a variety of textures of food in their days so they can satisfy their oral impulses with chewy, crunchy, soft, etc. foods and maybe use those outlets rather than biting people. Becoming vigilant about food texture, along with telling my daughter categorically not to bite and reinforcing that lesson over and over and over again, helped. Eventually the stage passes, but it's very hard while you're in it. Take care of yourself. And please do not bite your child yourself -- doing that actually reinforces the behavior by showing that might is right.