Found a dog? What to do, and how shelters reunite lost dogs

Somewhere, someone is probably searching for the dog in front of you. Here is how to keep you both safe, find the owner, and what happens if the dog goes to a shelter.

It might be a dog trotting along the shoulder of a county road, nose down, with nowhere obvious to be. Or a dog sitting on your porch at dawn, collarless and polite, as if it had an appointment. However it happens, you are suddenly the most important person in that dog's day, and possibly in its family's week.

Somewhere nearby, someone is very likely searching. Whether that search ends in hours or never ends at all often depends on what the person who found the dog does next.

Finders matter more than most people realize. Shelter Animals Count, which tracks shelter data nationally, estimates that 2.9 million dogs entered US shelters and rescues in 2024, and about 60 percent of all dog and cat intakes that year were strays. The ASPCA reports that about 554,000 dogs were returned to their owners from shelters in 2024. Many more found dogs never make it into a system at all, which is why the first few steps you take are so important.

First, keep yourself and the dog safe

A lost dog is often scared, hungry and exhausted, and even a gentle dog may snap if it's frightened or in pain. Before you do anything else, take a breath and look at the whole situation.

• If the dog is injured, aggressive, or near fast traffic, call animal control instead of trying to catch it yourself. Note the exact location and stay at a safe distance if you can.
• If the dog seems friendly, approach slowly and from the side rather than head on. Avoid staring directly at it.
• Get low and let it come to you. Crouch or sit sideways, speak softly, and offer the back of your hand or a treat tossed nearby.
• Don't corner or grab a dog that's backing away. A frightened dog that feels trapped is the one most likely to bite or bolt into the road.

Check for a collar and tag

If the dog lets you, check its collar for a tag with a phone number, and call it. It is still one of the fastest ways home. In a 2007 Ohio State University study of 187 lost dogs, license tags accounted for about 18 percent of recoveries.

Take photos before you change anything: the dog from both sides, its face, any collar or clothing, and the spot where you found it, ideally with a street sign in view. Those photos will help the owner recognize their dog and help you confirm the right person when they call.

Keep the dog safe while you look

If you can hold the dog safely, use a leash or a fenced yard, and keep it away from your own animals until you know more. Offer fresh water. If you need to feed it, keep it to a small amount of plain food, and ask a vet if you're unsure. If you can't keep the dog, your local shelter is the right place for it.

Take the dog to a vet or shelter to check for ID

Any vet clinic or animal shelter can check a found dog for identification, and many will do it free. It's worth doing even if the dog looks well cared for, and even if it has no collar.

Report the dog as found, everywhere an owner would look

Shelters are often the first place owners call, so report the dog to your local shelter and animal control even if you plan to keep it while you search. Give them your photos, where and when you found the dog, and how to reach you. Then report it to shelters in nearby towns too, because owners don't always know which jurisdiction their dog wandered into.

Then post where neighbors look:

• Neighborhood social media groups and Nextdoor
• Lost-and-found services such as PawBoost and Petco Love Lost
• Simple FOUND DOG flyers near where you found it, with your number but not your address

Hold back one detail. Leave out something distinctive, like a marking, the color of the collar, or a missing tooth, so you can check that the person who calls is the real owner. Ask for photos of the dog with them, or vet records, before handing it over.

What happens at the shelter

If the dog goes to a shelter, staff check it for identification and try to reach the owner. Most of the country also gives owners a window of time to come forward. According to the Animal Legal and Historical Center at Michigan State University, about 38 states and the District of Columbia have laws requiring shelters to hold strays for a set period before they can be adopted out or otherwise placed. Most of those periods are 3 to 5 days, ranging from 48 hours in Hawaii to 10 days in Missouri.

Those laws apply to shelters and animal control, not to private people who take in a stray. If you're thinking about keeping a dog you found, the rules depend on where you live, so call your local shelter first. Reporting the dog doesn't mean giving it up. It means giving the owner a fair chance to find it.

What not to do

• Don't give the dog away or rehome it yourself. The owner may still be searching, and in many places it isn't legally yours to give.
• Don't assume the dog was abandoned. A dog that has been out for a few days can look thin, dirty and neglected even if it's deeply loved.
• Don't post your home address publicly. Share a phone number and a general area instead.
• Don't hand the dog to anyone without proof that it's theirs.

Every reunion starts with someone like you

Researchers who studied people who found lost pets in Dayton, Ohio, in 2006 found that only 38 percent of those pets were reunited with their owners. Every step above, from the photo to the report to the held-back detail, raises the odds for the dog in front of you.

It's also why we built The HALO Chip with shelters in mind. The HALO chip is a GPS microchip for dogs, and shelters and rescues will be able to scan a HALO chip dog free from a phone or tablet, with the owner told right away. It launches in the US in spring 2027. See how it works for shelters, and if you've lost a dog yourself, read what to do in the first hour.