This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Okuri-inu (Japanese)
There are stories of the okuri-inu from the T?hoku region to Kyushu, but depending on the area it can be a wolf not a dog, and there are numerous differences in its behaviour. It is sometimes also called simply the 'yama-inu' (wild dog, wolf) or the 'okami' (wolf). The okuri-inu closely follows people who are walking along mountain paths at nighttime.
If by chance the person falls over they will be immediately eaten up, but if they pretend to be having a short rest they will not be attacked. It is important not to look too tired, though. These features are common to every region, but the dog's behaviour does sometimes vary.