Bug lost his first tooth!

Our 5 1/2 year old son, Bug, has been wiggling his lower front tooth for the past couple of weeks. For most of that time he's been very cautious about it. Some caution is totally understandable, especially for a kid like Bug who likes to be sure he knows how to do something All The Way before he gives it a try. The new "grown-up tooth" behind it has been slowly growing in, ready to take over whenever the wiggly tooth was ready to fall out. We would joke while brushing his teeth at night that he was just going to grow several complete rows of teeth, like a shark, never actually losing any.