Saw this on my twitter feed:
"Fear Factor @NBCFearFactor
Contestants were specially fit with invisible retainers to protect the snakes from their teeth. #FearFactor
Retweeted by Joe Rogan"
Hopefully it was some kind of squishy plastic and they had a few animal experts on hand to make sure the babies didn't get roughed up too bad. I didn't see the episode, more a fan of his podcast and ufc. Lame stunt NBC.