Microchipping is among the most cost-effective companion animal welfare interventions, dramatically increasing the probability of reunion after loss and preventing euthanasia of stray animals with unknown owners.
Microchipping is a simple, low-cost intervention with substantial welfare benefits. Lost pets without identification face extended periods in shelters, reduced likelihood of reunion, and elevated euthanasia risk. Microchipped pets with current owner details have dramatically better welfare outcomes — shorter shelter stays, higher reunion rates, and less stress for both animal and owner. The welfare case for extending microchipping to cats is strong — cats roam more widely and are frequently assumed to be strays when they are owned animals. The critical complement to microchipping is keeping database records current — a chip with a disconnected phone number or old address provides no benefit.