How Vets and Shelters Use Microchip Data in an Emergency

What happens when a vet or shelter scans your pet's microchip

When a frightened, injured, or lost pet arrives at a UK vet practice, council pound, or rescue centre, one of the first things staff do is scan for a microchip. A handheld scanner reads the 15-digit number stored in the rice-grain-sized chip, and that number is checked against the UK's approved databases — Petlog, PETtrac, ProtectedPet, and others — to pull up the registered owner's contact details in seconds. It sounds simple, and when the system works, it is: a stray dog can be back home within the hour. But the process only works if the chip is registered, current, and actually scanned in the first place — and UK data shows that's far from guaranteed.

The scanning process, step by step

Every authorised vet, local authority dog warden, and rescue centre in the UK has access to a microchip scanner and a database lookup account. When an animal comes in as a stray, hand-in, or emergency admission, staff will typically:

• Scan the animal thoroughly — chips can migrate slightly under the skin, so a proper scan checks the whole body, not just the usual spot between the shoulder blades
• Cross-check the number against [Check-a-Chip](https://www.check-a-chip.co.uk/), the official UK tool that identifies which of the approved databases holds the registration
• Look up the owner's details on that specific database — only accounts with scanner authorisation (vets, councils, rescues) can see this; the public lookup tool never shows personal contact information
• Attempt contact by phone, text, or email using the details on file
• Log the event, so there's a record of when and where the pet was found

Some databases, like PETtrac, also run a 24-hour reunification service with freephone lines and SMS alerts, so contact can happen outside normal vet hours — genuinely useful when a pet is found at 2am.

Why this system breaks down more often than you'd think

Here's the uncomfortable reality: scanning only works if what it finds is accurate. According to Dogs Trust's national Stray Dog Survey, around 60% of stray dogs arriving with local authorities were microchipped — but of those, only 38% had correct, up-to-date owner details. The rest had incorrect information, unregistered chips, or details on a database staff couldn't easily trace. In practice, that means a majority of microchipped strays still can't be matched to an owner on the first attempt.

The most common culprits are ordinary life events nobody thinks to update: a house move, a new mobile number, a change of surname, or a chip that was registered by a breeder or rescue and never transferred into the new owner's name. None of these feel urgent — until the day your pet is sitting in a vet's back room with a working chip that leads nowhere.

The rules have tightened — but registration is only half the job

Since 10 June 2024, microchipping has been a legal requirement for cats in England as well as dogs, under the Microchipping of Cats and Dogs (England) Regulations 2023. Owners have 21 days to get an unchipped cat done once notified, or risk a fine of up to £500. The RSPCA has welcomed the change, expecting it to reunite more lost and injured cats with their families and reduce abandonment. That's a genuine step forward — but a chip is only as good as the record behind it, and the law doesn't check whether your details are current.

How PawLink fits into the emergency picture

A microchip is still the legal backbone of pet ID in the UK, and PawLink doesn't replace it — but it solves the exact gap the Dogs Trust data exposes. Because a PawLink tag links to a live, owner-updated profile, anyone who finds your pet can tap the tag with their phone and see your current contact details immediately, with no scanner, database account, or working hours required. If your pet ever goes missing, switching on Lost Mode puts that alert front and centre the moment someone taps. It's a second, always-current layer working alongside your pet's microchip, not instead of it.

What you can do this week

• Check your microchip details are current on whichever database your pet is registered with — search by chip number at Check-a-Chip if you're not sure which one
• Update your record after any house move, phone number change, or change of ownership
• Make sure cats are chipped if they aren't already — it's now a legal requirement in England
• Add a visual, tappable ID layer alongside the chip, so a finder doesn't need scanner access to reach you

Keeping both systems current takes minutes and could be the difference between a same-day reunion and a much longer, more stressful search. Visit the [PawLink Safety Hub](/safety-hub) for more UK-specific pet safety guides, or [get your PawLink tag](/#pricing) to add always-current, tap-to-contact ID to your pet's collar.