Any cat, indoor or with opportunity to go for a walk, must be identified by means of a transponder (microchip) and registered in the Spanish Pet Registry. Through identification and registration, the animal can be quickly returned to its owner if it gets lost. Registration is free and can be done without much effort.
The transponder is no bigger than a grain of rice. The veterinarian can inject it under the animal’s skin at any time and without anesthesia. Therefore, this type of tagging should, if possible, be made immediately after getting the cat, when the animal is firstly taken to the veterinarian.