The Hoop snake is a mythical creature from the United States and Canada that looks like a regular snake, but has the ability to grab its tail in its mouth and roll like a wheel at high speeds. It hunts by chasing people in hoop-mode, getting close, and then rapidly straightening itself out and stabbing their victims with their poisoned tail.
If you look at the descriptions of the hoop snake, it is said that it forms its wheel to chase prey and travels like a normal snake when running away from things. Unlike the wheel spider, the hoop snake doesn't seem to rely on gravity to roll around. It can form its wheel and accelerate from a standstill.
Here are two points that should be considered about this arrangement:
- How does it get into its circular position?
- How does it actually move itself forward in hoop-mode (aside from just rolling down a really big hill)?
I have seen clips of snakes flipping themselves over when playing dead, but that kind of side to side movement wouldn't really translate into forward locomotion. Unless there is another method of movement that I'm just not thinking of.