Whats Red and White and Holds a Nut?

This squirrel's teeth!

I was "hiding" at the bottom of the oak tree in my front yard waiting for a squirrel to come down with it's haul. The first two squirrels were not fooled. However, the third pictured here froze in his tracks.

If you zoom in, you can see that his top two teeth are red and the bottom are white!