This occurs in multiple species that are not otherwise known for caudal luring (wiggling their tails to attract prey). It seems to be a case of overstimulation - think of a hyper kid with a sweet tooth who knows he's about to get a piece of cake. The snake smells the prey item, it's about to eat, those feeding instincts are going a mile a minute, and the tail wagging seems to be kind of an outlet for the excess energy...you know, since snakes' mouths don't water when they're amped up about food.![]()
It's fun to see, isn't it?![]()