This Spanish Sulphur Mother and Daughter reside on the "Wildside" of the Black Hills Wild Horse Sanctuary.
The Mother is the grulla or grey coloring while the daughter is a reddish dun coloring. Both have the dark leg stockings, the dorsal stripe and black tipped ears that are associated with the Spanish Mustang.
These two will likely stay together for the balance of their lives. Mothers and daughters within the herd are strongly bonded