Question: what to do with a biting 2 year old?
Answer: Step 1: Be calm and firm. Address your child with a firm "no biting!" or "biting hurts!" Keep it simple and easy for a toddler to understand. ... 
Step 2: Comfort the victim. ... 
Step 3: Comfort the biter, if need be. ... 
Step 4: Offer alternatives. ... 
Step 5: Redirect.