At 19 months, my LO has started to display some aggressive behaviors when he gets angry. On several occasions, he has scratched/clawed at DH or myself when he was upset. This morning, he managed to get ahold of my wallet and didn't want to give it back, and when I took it back he bit me. He's been bitten twice by other kids at daycare who've wanted a toy, etc he was using, and I don't want him to pick up this behavior.

How do you address aggressive behavior by your toddler? Suggestions on podcasts/books/blog posts would also be greatly appreciated!