Microchipping provides permanent identification for companion animals, enabling reunion with owners after loss and facilitating welfare interventions for strays and abandoned animals.
Microchipping delivers meaningful welfare benefits by enabling lost, stray, or stolen animals to be reunited with their owners rather than entering the welfare system or being euthanised. Reunification rates for microchipped dogs are substantially higher than for unidentified animals. The welfare cost of the procedure itself is minimal - brief needle discomfort with no lasting effect. The bigger welfare problem is database maintenance: a microchip linked to an outdated owner record fails its welfare purpose entirely. Mandatory microchipping for cats is a significant welfare advance - cats are far more likely to stray widely and less likely to be wearing collars. As the cat database matures, the welfare benefits for stray and lost cats should be substantial.