A: Your 2-year-old isn't actually safe to be with his younger cousins just yet -- without adult supervision. He can't help himself -- even though he doesn't mean to hurt the little guy, he is bound to act out, push, and grab. Your son needs you to stay close by to help him play nicely with his cousin. Don't scold, but talk him through how to play and have fun with other children. 2-year-olds need to know where the limits are -- that's they're job, to push the limits to find out where they are. It's our job as parents to gently show them the limits -- which will help him learn self-control as he gets older.