Microchipping is essential for companion animal welfare, but the chip alone is insufficient without correct implantation, registration, and database maintenance.
Microchipping provides its welfare benefit — reunification of lost animals with owners — only when the entire system works correctly: chip correctly implanted, readable by standard scanners, registered on a database with current contact details, and searchable when the animal is found. Failures at any link in this chain can result in an animal being euthanised as unidentifiable when it is in fact microchipped. The welfare investment in microchipping requires maintenance — registration must be updated when owners move or change details, and the chip should be scanned at annual veterinary visits to confirm readability.