How Microchips Help Find Lost Pets
A microchip is one of the most reliable ways for a lost pet to be reunited with its owner, but only if the registration details are current. This guide explains how microchips work, why registration is the part that actually matters, and the steps to take if your microchipped pet goes missing.
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What a microchip is (and is not)
A pet microchip is a tiny passive tag, about the size of a grain of rice, placed under the skin by a veterinarian. It stores a unique ID number that a shelter or vet reads with a scanner. It is not a GPS tracker: it cannot show your pet's live location. Its value is that it permanently links your pet to a record that includes your contact information.
Why registration is the key
The chip is only useful if its ID number is registered to you with current contact details. A chip that was never registered, or that still lists an old phone number or a previous owner, can leave a shelter unable to reach you. Confirm your pet's chip is registered and keep your address and phone number up to date with the registry.
What to do if your microchipped pet is lost
- Confirm your contact details are current with the microchip registry right away.
- Report your pet lost to nearby shelters and animal control, and mention the chip.
- Still post a lost pet listing and flyers — a chip helps only once your pet is scanned, so visibility still matters.
If you found a pet
Take a found pet to a veterinary clinic, shelter or animal control to be scanned for a chip — it is often the fastest route to the owner. Scanning is typically free. See report a found pet and where to report a found dog.
Pair the chip with a visible ID tag
A microchip works behind the scenes; a collar tag works instantly for anyone who finds your pet. Together they give the best chance of a quick reunion. Keep both current and add the habit to your lost pet checklist.
Frequently asked questions
Does a microchip track my pet's location?
No. A microchip is not a GPS device. It stores an ID number that a shelter or vet reads with a scanner to look up your contact details.
My pet is chipped but still missing — what should I do?
Confirm your contact details are current with the registry, report the pet to local shelters and animal control, and keep a listing and flyers active so your pet gets scanned sooner.
Is scanning a found pet for a chip free?
Most veterinary clinics, shelters and animal control agencies scan found pets for free. It is often the quickest way to reach the owner.
Do I still need an ID tag if my pet is chipped?
Yes. A visible collar tag lets anyone contact you immediately, while a chip only helps once the pet is taken somewhere with a scanner.