Here is another one Tsuchinoko, it is a talking Serpent and people claim to see them every once in a while
They have a Japanese Bigfoot type thing too. It's actually part of their Religion, you might already know that, but Japanese Religion is more about Bigfoor and Loche Ness Monster type stuff, and like Ghosts like the one from the Grudge, that's all Japanese Religion. There are a few Ancient Japanese Texts that contain all of this stuff, but one of the main ones is the Kojiki.