A microchip is a small, capsule-shaped device measuring about 2mm by 1cm, which is implanted under the skin of an animal. Each chip contains a unique identification number that can be read by a special scanner to access the animal’s information (such as the registered owner’s name and address) from a database.
As of June 1, 2022, it is mandatory for dogs and cats sold by pet shops and breeders to be fitted with a microchip. It is also recommended to have a microchip implanted in animals born at home or received as a gift. Our clinic can perform microchip implantation.
How Microchipping is Done
The microchip is implanted using an injector with a needle slightly thicker than a standard injection needle, which is inserted under the skin at the back of the neck. The procedure is simple, similar to a subcutaneous injection, and usually does not require special measures such as pain relief or anesthesia.
Benefits of Microchipping
Microchipping helps identify lost or displaced animals during emergencies such as natural disasters. If an animal is found, a scanner can read the microchip to retrieve the owner’s contact information, increasing the chances of reuniting the animal with its owner.
Once implanted, a microchip is used for a lifetime and does not typically come off or break like an ID tag might.
For international travel, microchip implantation and submission of a certificate are required. Procedures and documentation may vary by destination country, so ensure the microchip is implanted for proper identification.
Drawbacks of Microchipping
According to the Ministry of the Environment’s pamphlet on microchips, there have been very few reported adverse effects from microchip implantation in Japan. X-rays and CT scans are generally unaffected, though some MRI machines may experience image distortion. If minimizing image interference is crucial, the microchip can be removed under sedation.
Procedures Related to Microchipping
1. When Starting with a Microchipped Pet
If you acquire a pet with an existing microchip, you must update the registration to reflect your information within 30 days from the date of acquisition (or within 30 days after the pet reaches 90 days of age for puppies and kittens). Obtain the “registration certificate” from the seller or previous owner, which includes the microchip identification number and access code, and complete the registration update. After registration, you will receive a registration certificate, which should be kept safely at home.
2. When Installing a New Microchip in a Pet
Have a veterinarian implant the microchip and then register the microchip information and owner details within 30 days. Receive the “microchip implantation certificate” from the veterinarian and follow the same registration process as described above.
3. When Changing Registration Information or After the Pet’s Death
If you change your address or phone number or if your pet passes away, you need to notify the registration organization. Prepare the “registration certificate” and complete the necessary paperwork. There is no fee for updating registration information.
For more details, please refer to the Ministry of the Environment’s website:
