Microchipping dramatically improves return rates for lost pets and reduces euthanasia in shelters; it is now legally required in many countries.
Lost and unidentified pets face euthanasia in shelters when owners cannot be contacted. Microchipping allows rapid identification and reunification, dramatically reducing shelter time and euthanasia rates. The welfare benefit vastly outweighs the momentary discomfort of microchip implantation. Registration in current databases is equally important — chips without updated records have limited value.