The tsuchinoko is a legless lizard-like cryptid. I have found a photograph that supposedly is of it, but in my opinion is a misidentified blue-tounged skink. Although the skink lives in a different place, it is entirely possible that it is an escaped pet. The skink has small legs, frequently covered up by the body. Here is the photo of it and a photo of a skink. If you look carefully, there are small stumps where the legs should be, indicating that the legs are bent inwards.