Microchipping cats significantly improves the chance of reunion after loss, yet many cats remain unidentified. Understanding the welfare impact of identification standards is important for companion animal policy.
The welfare implications of unidentified lost cats are significant. Cats in shelters without identification face euthanasia, disease exposure, and prolonged stress. Feral vs. owned cats cannot be distinguished without identification, leading to unnecessary suffering and death. Mandatory microchipping for cats, as exists for dogs in the UK since 2023, would prevent enormous suffering. However, microchipping alone is insufficient without updated databases. Shelter scanning protocols must be robust, and scanner compatibility must be standardized across chip frequencies. The welfare case for universal cat identification is compelling and the intervention is low-cost and low-risk.