I'm curious about this as well. Every time I go to pick up my hog island boa, I've always thought I felt like an electric buzzing throughout his body until I get him out of the cage. Until now, I just kind of dismissed it as just me. He is in a custom wooden enclosure, heated by a 1 foot section of 11" heat tape that's covered by ceramic tile, so I know there is nothing electrical exposed in the enclosure at all.