Walnut is one of three horses sold in the Liv doll playsets. Katie & Walnut are also sold in a playset.
The horse has a brown body with a black mane and could be considered a bay coloured horse.
Katie could be considered the owner of this horse.
The horse appears to be able to bend its neck (in one direction), it has shoulder joints, knee and ankle joints on all four legs.
The saddle is not visible.
The horse has similar eyes to the Liv dolls - that is the there is a pupil, coloured iris and sclera (white) of the eye.