Horses are highly social animals whose welfare is significantly compromised by isolation, making companion animals or at minimum visual and auditory contact with other horses essential.
Horse social welfare is a fundamental welfare issue that remains surprisingly common despite clear guidance. A horse kept alone in a stable or field, without any equine companionship, is experiencing social deprivation that causes chronic stress. The welfare costs are measurable: elevated cortisol, development of stereotypic behaviours, altered feeding and sleeping patterns. The solution does not require perfect conditions - a retired companion, a donkey, or even a goat provides partial but real welfare benefit. Complete equine isolation is a welfare failure that horse welfare organisations consistently identify as one of the most common preventable problems in companion horse keeping.