Microchipping Your Pet: Everything You Need to Know

Every year, millions of pets go missing. Only a fraction are reunited with their families. The difference between a happy reunion and a permanent loss often comes down to one thing: a microchip.

Here's everything you need to know about this simple, lifesaving technology.

What Is a Pet Microchip?

The Basics

A microchip is a tiny electronic device—about the size of a grain of rice—that's implanted under your pet's skin. According to the AVMA, each chip contains a unique identification number linked to your contact information in a database.

How It Works

1. Implantation: Chip is injected under the skin (between shoulder blades)
2. Scanning: When a lost pet is found, shelters/vets scan for a chip
3. Database lookup: The chip number is searched in the registry
4. Contact: You're notified that your pet has been found

The chip itself contains NO GPS or battery. It's a passive device that only transmits its number when scanned.

What a Microchip Is NOT

• ❌ Not a GPS tracker (no real-time location)
• ❌ Not a battery-powered device (no charging needed)
• ❌ Not a replacement for ID tags (tags work instantly; chips require a scanner)

Why Every Pet Needs a Microchip

Statistics That Matter

• 1 in 3 pets get lost at some point in their lives
• Only 22% of lost dogs entering shelters are reunited with owners
• Only 2% of lost cats without microchips are returned—versus 38% with chips
• Microchipped dogs are 2.5x more likely to be returned home

Collars Fail

• Collars can be removed
• Tags can fall off or become unreadable
• Breakaway collars (for cats) are designed to come off
• Indoor cats may never wear collars

A microchip is permanent and cannot be lost.

Common Scenarios Where Chips Save Pets

• Pet escapes during travel or emergency
• Pet is stolen and later found
• Pet slips out during home service calls (plumber, etc.)
• Natural disaster evacuation
• Pet wanders from open door/gate

The Implantation Process

It's Quick and Simple

Duration: 30 seconds to a few minutes

Pain level: Similar to a vaccination—brief pinch

Anesthesia: Not required (though often done during spay/neuter)

Placement: Between shoulder blades, under the skin

Recovery: None needed—pet can resume normal activities immediately

Who Can Implant Chips

• Veterinarians
• Trained shelter staff
• Some pet stores with certified implanters

Cost

$25-75 typically, often included in adoption fees or spay/neuter packages

When to Chip

• Puppies/kittens: As early as 8 weeks old
• Adult pets: Any time
• Before travel: Essential before trips
• At adoption: Most shelters chip automatically

Registration: The Critical Step

The chip is useless if not registered properly.

Common Mistake

Many owners assume the chip is automatically registered to them. It's not always. You must:

1. Get your chip number from the vet
2. Register with the chip manufacturer's database
3. Verify YOUR contact info is in the system

How to Register

1. Find your chip manufacturer: Common ones include:

   • HomeAgain
   • AVID
   • 24PetWatch
   • Petlink

2. Go to their website

3. Enter chip number and your info

4. Pay any registration fee (usually free or low-cost)

Keep Information Updated

Every time you move or change phone numbers, update your chip registration.

Outdated contact info is why many chipped pets aren't returned.

Types of Microchips

Frequency Matters

Chips operate at different frequencies:

• 125 kHz: Older standard
• 128 kHz: Another older format
• 134.2 kHz (ISO standard): Most common globally now

Most modern scanners are "universal" and read all frequencies—but not all do.

Global vs. Regional

If traveling internationally, ensure your pet has an ISO-standard chip (134.2 kHz), as some countries only accept this standard.

Checking Your Pet's Chip

At the Vet

Ask your vet to scan during routine visits to:

• Confirm the chip is still working
• Verify the number
• Check that it hasn't migrated

Online Lookup

Use services like petmicrochiplookup.org (AAHA's universal lookup) to:

• Enter your chip number
• See which database it's registered with
• Verify your info is current

What to Do If Your Pet Is Lost

Immediate Steps

1. Search your property thoroughly (pets hide when scared)
2. Alert neighbors
3. Walk the neighborhood calling their name
4. Put out scent items (litter box for cats, your worn clothing)

Reporting

1. Call your microchip company to flag pet as lost
2. Contact local shelters (visit in person if possible)
3. File a lost pet report with local animal control
4. Post on local social media (Nextdoor, Facebook groups)
5. Print and distribute flyers

Why Physical Searches Matter

Microchips only work when someone scans for them. An injured or hiding pet won't be scanned unless found.

What to Do If You Find a Lost Pet

Getting the Pet Scanned

Take the pet to:

• Any veterinarian
• Local animal shelter
• Many pet stores (some have scanners)

Scanning is typically free.

If a Chip Is Found

The shelter or vet will contact the registry, who will contact the owner. You usually can't access owner info directly (privacy protection).

If No Chip Is Found

• Post "found pet" notices
• Check for lost pet postings
• Contact local rescues
• Consider temporary foster while searching for owner

Microchipping Other Pets

Microchips aren't just for dogs and cats:

• Rabbits: Highly recommended (escape artists)
• Birds: Common for parrots
• Ferrets: Recommended
• Horses: Standard practice
• Reptiles: Possible but less common

Addressing Concerns

"Will It Hurt My Pet?"

The implantation is similar to a vaccination. Brief discomfort during injection, then nothing.

"Can the Chip Migrate?"

Rarely. Modern chips have anti-migration coating. Occasional minor migration doesn't affect function—scanners check the whole body.

"Can Chips Cause Cancer?"

Extremely rare reports exist, but millions of chips have been implanted safely. The cancer risk is infinitesimally small compared to the risk of a lost pet never returning.

"My Pet Never Goes Outside"

Indoor pets still escape. Doors get left open. Emergencies happen. Windows without secure screens fail. Indoor pets need chips too.

The Bottom Line

Microchipping your pet is:

• ✅ Quick and simple
• ✅ Low cost (often under $50)
• ✅ Permanent identification
• ✅ Dramatically increases reunion chances

But remember:

• Register the chip with YOUR contact info
• Update info when you move or change phones
• Collars with ID tags are still important (work without a scanner)

It takes 30 seconds to implant a chip. It takes one open door to lose a pet forever. Make the obvious choice.

Related: How to Pet-Proof Your Home Related: Traveling with Pets

Frequently Asked Questions

Does a microchip work like a GPS tracker to locate my lost pet?

No, a microchip is not a GPS tracker. It is a passive device the size of a grain of rice that contains only a unique identification number. It has no battery, no power source, and cannot transmit location data. It only works when scanned at close range by a vet or shelter, who then looks up your contact information in the linked database.

Do I need to register my pet's microchip separately after implantation?

Yes, this is a critical step that many owners miss. The microchip is useless if not registered with your current contact information. After implantation, register with the chip manufacturer's database (HomeAgain, AVID, 24PetWatch, etc.) and update your information every time you move or change phone numbers. Outdated contact info is the top reason chipped pets are not returned.

Does microchipping hurt my pet and is there any risk involved?

Microchip implantation is similar to a routine vaccination—a brief pinch as the chip is injected under the skin between the shoulder blades using a slightly larger needle. No anesthesia is required, and pets can resume normal activity immediately. The risk of complications is extremely low, and the tiny chip provides permanent identification that dramatically increases the chance of reunion if your pet is ever lost.