Gytrash

[2] Appearing usually in the shape of animals (horses, mules, and dogs among others), the Gytrash haunt solitary ways and lead people astray, but they can also be benevolent, guiding lost travelers to the right road.

It was exactly one form of Bessie's Gytrash -- a lion-like creature with long hair and a huge head [...], with strange pretercanine eyes [...].

A Black Dog dragging a chain a dusky calf[,] nay even a rolling stone or a self impelled cart wheel are more commonly the mortal coil of the Sullen Spectre[.]

But the Darkwall Gytrash was known by the form of an Old Dwarfish and hideous Man as often seen without a head as with one and moving at dark along the naked feilds which spread round the Aged House[.]

'[6] This spirit is also known as Guytrash and Guytresh according to The English Dialect Dictionary of Joseph Wright (1855–1930) where it is defined as a ghost that takes the form of an animal.