How to Update Your Pet's Microchip Information: A Step by Step Guide

If your pet's microchip is registered but the registry still shows your old address or a phone number you closed out two carriers ago, update it now: log into the registry account, or find it with a universal microchip lookup tool if you don't remember which one you used, edit your contact details, and save. Confirm the change went through, either with an on screen message or a confirmation email. Most registries let you do this in under ten minutes once you know your chip number and which company holds the record.

Microchipping only works as a reunification tool if the database behind the chip is accurate. A shelter or veterinary clinic that scans a lost pet is reading a string of numbers, nothing else. That number is worthless without a current name, phone number, and address sitting behind it in a registry. A lot of pet owners register a chip once, at the breeder's or the shelter, and never touch the account again. Years later they move twice and switch phone carriers, and the chip is still pointing at an apartment they left years ago.

This guide walks through finding your pet's chip number, figuring out which registry to log into, updating the record correctly, and building a habit so the information stays current instead of going stale again.

Why an out of date registry defeats the purpose of microchipping

A microchip itself never expires. It is a passive device about the size of a grain of rice, implanted under the skin between the shoulder blades, and it does not run out of battery or stop working after a few years. The part that fails is almost always the paperwork behind it.

When someone finds a loose or injured pet, they typically bring it to a shelter, a veterinary clinic, or an animal control officer, who scans for a chip with a handheld reader. The scanner reads the identification number and nothing else: no name, no address, no phone number. Whoever is holding the reader then has to look that number up in whichever registry the chip's manufacturer uses. If the contact record attached to that number is your old landlord's address or a phone number you disconnected, the trail goes cold right there, and staff are left guessing.

This is also why registering the chip is not the same as maintaining it. A shelter or breeder registers a brand new chip at the time of adoption or sale, sometimes using their own contact information as a placeholder. If you adopted your dog three moves ago and never checked the account since, there is a real chance the registry still shows information from that first registration rather than anything current. For the fuller case on why microchipping matters in the first place, see our guide on the benefits of microchipping your pet.