Crayfish (Crawdads)

Recently I have taken several photos of crayfish feeding on the dead skin on my feet and legs.  For some reason my feet seem to be entirely attractive and delicious to crayfish, kind of like lobster to humans.  One actually swam past two people (thats four feet) to get to my feet.  Not sure what that means, either my feet are really stinky or I have lots of dead skin. My theory its because I walk around with bear feet quite a lot, so I have lots of dead skin. 

I can tell you that it took quite an effort to leave my feet for these big suckers to bite on.  First they tickle, then the bite hard!!!