Horses are highly social animals with complex herd dynamics, and management that denies appropriate social contact causes significant welfare harm.
Horses kept alone without any social contact experience chronic loneliness that manifests in stereotypic behaviours and acute anxiety responses when herd members are moved. Even horses that appear settled in individual stabling often show behavioural evidence of unmet social needs. Providing at least visual contact, and ideally physical contact through shared turnout or stable adjacent housing, substantially improves equine social welfare.