What is Hoof Wall Separation Disease?

HOOF Wall Separation Disease (HWSD) occurs due to a genetic mutation caused by a single mutated gene, and is known as an autosomal recessive genetic disorder. If a pony has two copies of this mutated gene it makes that animal an affected (HWSD/HWSD) animal, i.e. all four hooves are affected. Defects occur in the horn of the dorsal hoof wall.