Dog Microchipping: What It Is, How It Works & Why Every Dog Needs One 2026
Dog microchipping is a permanent, pain-free identification method where a tiny RFID chip — about the size of a grain of rice — is implanted under your dog’s skin, giving them a unique ID number that can reunite you if they ever get lost. Microchipped dogs are significantly more likely to be returned to their owners than those without chips.
This guide is for informational purposes. Always contact your veterinarian directly for current pricing and availability.
What Is Dog Microchipping?
A dog microchip is a passive Radio Frequency Identification (RFID) device roughly the size of a grain of rice (12mm × 2mm). It carries no battery — it only activates when a compatible scanner passes over it, reading a unique 9–15 digit ID number. That number is linked to your contact details in a national database, allowing shelters, vets, and animal control officers to identify your dog and contact you.
Microchipping is not a GPS tracker. It cannot tell you where your dog is in real time — it only works when someone finds your dog and scans them. However, it is permanent, maintenance-free, and far more reliable than collar tags that can fall off or become unreadable.
In the United States, microchipping is strongly recommended by veterinary associations and required by law in many countries including the UK, Australia, and parts of Canada. Even if not legally required where you live, most shelters and rescue organisations will microchip dogs before adoption.
How Microchipping Works
The procedure takes under 30 seconds. A veterinarian or trained technician uses a sterile needle (slightly larger than a standard vaccine needle) to inject the chip between your dog’s shoulder blades, just under the skin. Most dogs show little reaction — at most a brief flinch, similar to a vaccine. No anaesthesia is required.
Once implanted, the chip stays in place for the dog’s entire life. The RFID chip has no moving parts and cannot degrade. If someone finds your lost dog and brings them to a shelter or vet clinic, staff run a universal scanner over the dog’s body. The scanner emits a low-frequency radio wave that powers the chip momentarily, and the chip transmits its ID number. The staff then search the microchip registry to find your contact details.
Important: the chip itself does not store your contact details — only the ID number. Your details are stored in the external database. This means you must register the chip and keep your contact information updated when you move or change phone numbers.
Microchipping Cost
The cost of dog microchipping varies depending on where you have it done:
| Provider | Typical Cost | Notes |
|---|---|---|
| Veterinarian clinic | $25–$60 | Most common, done at wellness visits |
| Animal shelter / humane society | $10–$25 | Often subsidised rates for community members |
| Pet store microchip event | $10–$20 | Periodic low-cost clinics |
| Mobile vet service | $30–$75 | Convenience premium |
| Registry fee (one-time) | $0–$25 | Some registries are free; others charge |
Pricing data sourced from ASPCA and AVMA guidelines, 2025.
Many veterinarians include microchipping as part of a new puppy package or wellness exam. If cost is a barrier, check with your local animal shelter — most offer low-cost or free microchipping events periodically.
Registration & Databases
After your dog is chipped, you must register the chip number with a database. In the US, there are several registries, and scanners at shelters search multiple databases. The main options include:
- AAHA Universal Pet Microchip Lookup — searches most major US databases simultaneously at petmicrochiplookup.org
- HomeAgain — one of the largest registries, includes 24/7 lost pet support
- AKC Reunite — free lifetime registration, widely used
- Microchip ID Registry (MCIR) — global database useful for travelling pets
- Found Animals Registry — free registration
Whichever registry you choose, always update your contact details immediately if you move or change your phone number. An unregistered or out-of-date chip is nearly as unhelpful as no chip at all. Register with at least two databases for redundancy.
When you adopt a dog that was previously owned, request the microchip number and contact the registry to transfer ownership to your name. This is often overlooked but critical.
Microchip vs GPS Collar
A common question is whether a microchip replaces a GPS tracker collar, or vice versa. The answer is: both serve different purposes and ideally you should use both.
| Feature | Microchip | GPS Collar |
|---|---|---|
| Permanent | ✅ Yes | ❌ Can be removed/lost |
| Real-time location | ❌ No | ✅ Yes |
| Battery needed | ❌ No | ✅ Yes |
| Ongoing cost | One-time (chip + registry) | Monthly subscription |
| Works without finder cooperation | ❌ Needs scanner | ✅ Yes |
| Accepted as legal ID proof | ✅ Yes | ❌ No |
A microchip is the legal standard for identification and is required for international travel documents (ISO 11784/11785 standard chip required). A GPS collar is ideal for proactive tracking during hikes or if your dog is an escape artist. Use them together for maximum protection.
You can find licensed veterinarians who offer microchipping at HeiBob’s vet directory, or search for vet clinics in your city.
Frequently Asked Questions About Dog Microchipping
Does dog microchipping hurt?
How long does a dog microchip last?
Can a microchip move inside a dog’s body?
Do I still need an ID tag if my dog is microchipped?
What chip standard should I use for travelling internationally?
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Ready to protect your dog’s identity permanently? Find veterinary clinics near you on HeiBob and ask about microchipping at your next visit.