mouse-dun

Her mount was a spirited, mouse-dun mustang, with crop-ears, a roached mane, and the back markings of a mule.

The Spinner's Book of Fiction Various

Sir W. Elliot informs me that he inspected a herd of 300 South American horses imported into Madras, and many of these had transverse stripes on the legs and short shoulder-stripes; the most strongly marked individual, of which a coloured drawing was sent me, was a mouse-dun, with the shoulder-stripes slightly forked.

The Variation of Animals and Plants Under Domestication, Vol. I. Charles Darwin 1845

I have seen cream-coloured, light-dun and mouse-dun horses dappled, which I mention because it has been stated (Martin,

The Variation of Animals and Plants Under Domestication, Vol. I. Charles Darwin 1845

In Norway the colour of the native horse or pony is dun, varying from almost cream-colour to dark mouse-dun; and an animal is not considered purely bred unless it has the spinal and leg stripes. [

The Variation of Animals and Plants Under Domestication, Vol. I. Charles Darwin 1845