All dogs and cats born after 10 April 2009 must be microchipped before they are sold or given away.
Microchips may be implanted only by a vet or other authorised implanter. When your animal is implanted with a microchip, the implanter must provide the microchip's unique number, the animal's information and your contact details to a licensed registry service. It is your responsibility to make sure these records are kept up to date.
When the microchip is read or scanned (harmless to animals) it shows the microchip number which is linked to information about the animal, including its owner and the owner's contact details. This information is important if your animal is lost or impounded.