This Japanese cryptid is most likely a snake or a legless lizard. It is about 3 feet long and incredibly fat, according to those who have seen it. It is most likely a species of viper. It is reportedly able to crawl like a caterpillar, bunch itself into a ball and roll, or push off and leap when scrunched together. The Tsuchinoko also posesses small horns in soma accounts, much like a sidewinder or a viper. It would be easy to dismiss this animal as an undiscovered Japanese viper. However, its types of movement are highly unusual, and if they are not exaggerated, it may in fact be a worm, caecilian, or even an onchyophoran. But overall, an unconventional viper is the most likely explanation.