Ringworm is a common and welfare-significant fungal skin disease in cats that has major implications for shelter management and adoption outcomes.
Ringworm welfare concerns are primarily about the consequences of infection rather than the disease itself, which causes discomfort but not severe suffering. The welfare cost of ringworm has historically been borne disproportionately by shelter cats, where infection triggered euthanasia decisions based on treatment burden rather than medical necessity. Shelter medicine advances have demonstrated that ringworm can be managed successfully in foster programmes, enabling cats who would previously have been euthanised to recover and be adopted. The zoonotic risk to humans is real but manageable with appropriate precautions. Owner education about ringworm treatment and prevention enables better welfare outcomes for infected cats who enter homes.