The key players this story are Hudson and Londyn. Londyn is my 19 month old niece. Since they live so far away, Hudson has only been around Londyn about a dozen time spread over 3 visits. We were coloring eggs on Sunday. My mom was holding the baby when my dad came up and tickled Londyn. Hudson did not approve and baked at dad. Dad did it again and Hudson jumped up on him and baked again. Dad did it a third time and Hudson jumped up on dad and put his teeth on dad's forearm. He didn't leave any sort of mark, but it shocked us all. We are now back in NY and won't see them for a few months. Suggestions on how to handle?