Yamajijii

Since it has teeth that could easily crush the bones of wild boar or a monkey, etc., hunters would tame this yamajijii with bait and use it to drive away wolves.

[7] However, yamajijii, who noticed that he was deceived through a gunshot, shapeshifted into a spider and sneaked into the opponent's home and attacked his sleep in order to clear his resentment.

In the old book Ashū Kiji Zatsuwa from Tokushima, a yamachichi would appear where there are woodcutters in mountain houses.

In what was formerly Monobe, Kōchi Prefecture (now Kami), someone named Nakao received a takakibi (morokoshi) seed from a yamauba and by sowing it, a great harvest resulted.

In the end, as a result of this repeating many times, the yamajijii became able to eat three to (about 54.5 liters) of mochi and Nakao, who feared for his family finances, gave him burned stones which he presented as mochi and yamajijii, who was feeling hot, was given hot oil which was presented as tea.