Soring involves the intentional infliction of pain to a horse's legs or hooves in order to force the horse to perform an artificial, exaggerated gait. Caustic chemicals—blistering agents like mustard oil, diesel fuel and kerosene—are applied to the horse's limbs, causing extreme pain and suffering...

MURCHISON, Texas—The wild Assateague Island horse who was removed from the Maryland tourist attraction by the National Park Service last month, is settling in seamlessly at Black Beauty Ranch, part of the Humane Society of the United States. The 13-year-old horse named Delegate’s Pride—also known as...