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Lost Dogs Database for Longmont, CO

Search lost and found dogs, as well as other pets, in the Longmont area with PawBoost.

88 lost dogs in your search

Lost Male Dog last seen Near th and devonshire thornton co80229, Thornton, CO 80229

Reported 6 hours ago

Roscoe Male Dog

LOST PawBoost ID: 72962938


Thornton, CO 80229

Mostly white with black pointed ears that stand up and under white wiry hair is black dots on skin

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Lost Female Dog last seen 71st Ave and hwy 34 near UC Health, Greeley, CO 80634

Reported 3 months ago, updated 21 hours ago

Penny Female Dog

LOST PawBoost ID: 72615955


Greeley, CO 80634

Yorkie zu mix black body and white/head and legs

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Lost Male Dog last seen E 100th Ave and Colorado , Thornton, CO 80229

Reported 1 week ago, updated 24 hours ago

Cucho Male Dog

LOST PawBoost ID: 72922389


Thornton, CO 80229

Brown long haired Chihuahua

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Lost Male Dog last seen Carter Lake, Loveland, CO 80537

Reported 1 week ago, updated 1 day ago

Scout Male Dog

LOST PawBoost ID: 72928499


Loveland, CO 80537

Tri color mini Aussie

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Lost Female Dog last seen The Corner , Boulder, CO 80302

Reported 1 day ago

Nora Female Dog

LOST PawBoost ID: 72957777


Boulder, CO 80302

Black miniature Australian Sheppard

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Lost Male Dog last seen E First St and South County Road 9e (near Simpson Ponds) Loveland, Colorado, Loveland, CO 80537

Reported 1 year ago, updated 2 days ago

Dozzer Male Dog

LOST PawBoost ID: 71324360


Loveland, CO 80537

80 lbs. Black lab mix with white diamond on chest . Wearing red nylon collar with tags at the time .He is microchipped.

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Lost Female Dog last seen Near E Midway Blvd, Denver, CO 80234 Lote 310, Denver, CO 80234

Reported 5 days ago, updated 2 days ago

Kiara Female Dog

LOST PawBoost ID: 72944484


Denver, CO 80234

Perrita pequeña y peluda blanca

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Lost Male Dog last seen E 84th Ave Denver Colorado Rainbow and 84th , Denver, CO 80229

Reported 11 months ago, updated 2 days ago

Makai Male Dog

LOST PawBoost ID: 71818628


Denver, CO 80229

Brown and white thick fur , growing his little baby teeth in (has the bottom and top mostly busy still growing in)

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Lost Male Dog last seen 93rd, Federal Heights, CO 80260

Reported 6 days ago, updated 3 days ago

Enano Male Dog

LOST PawBoost ID: 72940496


Federal Heights, CO 80260

Withe, Pomerania, male, 1 year old

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Lost Male Dog last seen 88th and York, Thornton, CO 80229

Reported 2 weeks ago, updated 3 days ago

Benji Male Dog

LOST PawBoost ID: 72914048


Thornton, CO 80229

This little white boy is a 6 year old neutered maltese. His hair is a little long at the moment and he should have a gray collar on his name is Benji.

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Lost Female Dog last seen Federal Heights Storage 92nd & Elm Ct, Federal Heights, CO 80260

Reported 3 years ago, updated 3 days ago

Romie Female Dog

LOST PawBoost ID: 69492179


Federal Heights, CO 80260

Light Tan & White with a curled tipped tail, white nails, brown eyes

Share On

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Lost Female Dog last seen River Run Park, Commerce City, CO 80640

Reported 11 months ago, updated 4 days ago

Xena Female Dog

LOST PawBoost ID: 71721918


Commerce City, CO 80640

Blue collar with tag POSSIBLE SIGHTING 10/15/25 in Woodglen neighborhood in Northglenn/Thornton area!

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Lost Female Dog last seen 100th a d Wadsworth, Westminster, CO 80021

Reported 4 days ago

Mokey Female Dog

LOST PawBoost ID: 72947816


Westminster, CO 80021

Small white dog.

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Lost Female Dog last seen 23rd st and 77th Avenue , Greeley, CO 80634

Reported 4 days ago

Tater Tot Female Dog

LOST PawBoost ID: 72946385


Greeley, CO 80634

Chow mix medium sized fluffy microchipped

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Lost Female Dog last seen Right off of 72 on plainview rd, Golden, CO 80403

Reported 5 months ago, updated 5 days ago

Blue Female Dog

LOST PawBoost ID: 72486497


Golden, CO 80403

Female German Shepherd won’t be wearing a collar but is microchipped.

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Lost Male Dog last seen Trilby, Fort Collins, CO 80525

Reported 6 days ago

Waylon Male Dog

LOST PawBoost ID: 72937826


Fort Collins, CO 80525

Brindle

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Lost Male Dog last seen Wrangler St and Colorado, Thornton, CO 80229

Reported 1 week ago

Cuchoo Male Dog

LOST PawBoost ID: 72933825


Thornton, CO 80229

Brown Chihuahua

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Lost Male Dog last seen Washington and 112th , Northglenn, CO 80233

Reported 1 week ago, updated 1 week ago

Buddy Male Dog

LOST PawBoost ID: 72926979


Northglenn, CO 80233

ROTTWEILER SIBERIAN HUSKY MIX

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Lost Female Dog last seen 155th & Havana (in the open space), Brighton, CO 80602

Reported 10 months ago, updated 1 week ago

Kona Female Dog

LOST PawBoost ID: 71917005


Brighton, CO 80602

Black/Brown Frenchie

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Lost Female Dog last seen W 76th Ave , Denver, CO 80221

Reported 3 weeks ago, updated 2 weeks ago

Manchita Female Dog

LOST PawBoost ID: 72876084


Denver, CO 80221

Goes by Manchita very friendly

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Lost Dog Data for Longmont, CO

There are 88 lost dogs in Longmont, CO.

Find Local Dog Shelters in Longmont, CO

PawBoost has communities of dog-lovers across the country and beyond that help find missing dogs, and that means partnerships with dog shelters in the US and in Canada.

Are you a team member at a shelter not yet partnered with PawBoost?

Request Shelter Partnership

Find Your Dog Sooner with PawBoost

When you have a missing dog, it can be difficult to know what to do in the moment.

How do I find my dog? Do I have to visit the dog shelters in my area in person, or is it okay to just call? How can I get the word out to my local community in Longmont?

With our free tools and premium add-on services, PawBoost helps lost dog owners find their furry loved ones – 2,228,869 pets reunited and counting!

Find your lost dog faster with PawBoost.

Report Lost Dog

Frequently Asked Questions

I lost my dog. What should I do?

Take advantage of online platforms – they help you get the word out, quickly and easily. You can report your lost dog to PawBoost in no time flat. We'll send an email alert to our local members, post to the PawBoost-powered Facebook page for your area, add your dog to our lost & found, and make a lost dog flyer – all for free.

Other sites that help you raise local awareness for your lost dog with minimal time and effort are Nextdoor.com – a PawBoost partner – and Craigslist. Both of these sites have very active lost & found sections mainly used for lost pets. We highly recommend you use these resources in addition to PawBoost!

Visit your local shelters and animal control agencies in person. Details can get lost in translation over the phone and that might lead to missed connection.

If chipped, make sure your dog's microchip is registered and up to date. If you don't know your pet's chip manufacturer or number, your vet should be able to help locate this information.

Put up flyers and tell your neighbors to be on the lookout. The more you engage the Longmont community, the better your chances of a happy reunion!

Read our full guide on how to find your lost dog for more actionable tips.

Where do I report a lost dog in Longmont, CO?

If you lost a dog, we would like to help. You can report a lost dog to PawBoost for free to help find your dog in the Longmont area. Millions of pet lovers have signed up for our local lost & found pet alerts, and that includes pet lovers near Longmont!

Do I have to pay for premium PawBoost services to find my lost dog?

You don't have to pay to find your lost pet with PawBoost. PawBoost's free dog finder services have helped millions of people reunite with their lost dogs.

PawBoost does offer premium upgrades to help increase the reach of your lost pet alert.

You can learn more about what free and premium services PawBoost offers here.