10+ years
Pooh Bear
This easy-going senior boy is the picture of relaxed charm, happy to amble beside you on leisurely walks and savor his favorite snacks with a wagging …
Adams County Animal Shelter • Brighton, CO
Senior dogs in Colorado
Senior dogs for adoption in Colorado
Meet 166 adoptable senior dogs (age 7+) in Colorado. Each one is from a shelter or rescue and ready to give an older dog's quiet, grateful love. Showing 91–120 of 166 below.
Last updated November 9, 2026 at 1:47 AM EST. Listings refresh throughout the day. Always confirm a dog’s availability with the shelter or rescue before making plans.
Senior dogs — age 7 and up — wait far longer for homes than puppies, even though they're usually already house-trained, past the chewing stage, and happy to nap at your feet. Adopting an older dog in Colorado means you typically know their size, temperament, and energy level from day one: fewer surprises, and a grateful companion who settles in fast. Right now the senior dogs listed in Colorado include Pit Bull Terrier, Chihuahua, and Australian Cattle Dog, spread across 19 cities and 32 shelters and rescues. Always confirm availability and adoption requirements directly with the shelter or rescue.
32 shelters and rescues in Colorado currently list senior dogs on Lily's Second Chance.
How adoption works in Colorado
In Colorado, rescue groups post most of the listings, and the majority come from around Denver, Pueblo and Fort Collins. A rescue adoption usually begins with an application and a conversation, and the dog is often living in a foster home. Municipal shelters and humane societies list here as well, generally with walk-in hours.
Open the profile of a dog you are curious about and contact the organization that has it. Plan on an application or a conversation, then a meet and greet, and an adoption fee decided by that organization, which often covers spay or neuter and vaccinations. With listings centered on a few cities, many groups help arrange transport within the state. Check the organization on the dog's profile for that dog's history, requirements and availability.
Available senior dogs in Colorado
166 senior dogs available in Colorado.
Senior confirmed
Senior confirmed
1St Mate Belly Rubs
I'll give you one guess why this kid has 'belly rubs' in her name... Because she loves them! She is a sweet, fluffy little girl that is looking for a …
Denver Animal Shelter • Denver, CO
Senior confirmed
Chompiraz
Meet this friendly and energetic senior dog with a heart full of love and a playful spirit. He adores chasing his favorite toys, then curling up for c…
Adams County Animal Shelter • Brighton, CO
Updated recently
Bentley
Meet Bentley! Bentley is a sweet senior pup who loves to cuddle and relax in the sun. He has never met a person he does not love, and while 11 years o…
Until They're Home • Fort Collins, CO
10+ years
Jessie
Meet Jessie! Jessie is a 10 year old Weimaraner mix and is bonded with Daryl. She is a sweet girl who loves to go for walks and take naps. Jessie and …
Until They're Home • Fort Collins, CO
Senior confirmed
Kodiak
Meet Kodiak, an older man who is ready for a new life of relaxing. He is slower and loves to explore and sniff. He would to best in a home with older …
Denver Animal Shelter • Denver, CO
Senior confirmed
Forest
Meet Forest! She is a sweet and playful girl ready for her new home! She is 7 years old and about 50 pounds. Forest loves toys and going for walks. Sh…
Until They're Home • Fort Collins, CO
Senior confirmed
Senior confirmed
Luna
Meet Luna, a delightful adult dog who brings joy to everyone at the shelter with her friendly demeanor and boundless energy. Luna loves to play and is…
Adams County Animal Shelter • Brighton, CO
Senior confirmed
Tippy
Tippy is a 9 yrs old, 70 lbs, very sweet boxer mix who was raised with love. She is sweet and calm with people, walks great on a leash, loves to play …
Mountain Pet Rescue • Tabernash, CO
10+ years
Cookie
Meet Cookie and Joseph! These two have quickly become staff favorites with their incredibly sweet personalities. They are a bonded pair and would love…
Aurora Animal Care • Aurora, CO
10+ years
Tita
Meet Tita! This independent girl has a quieter personality and enjoys doing things at her own pace. She knows sit, down, and paw, and she’s happy to t…
Aurora Animal Care • Aurora, CO
Senior confirmed
Nia
Hi, I'm Nia! I am a super sweet and loving pup who is looking for a home. I love to play and go on walks. My favorite toys are squeaky toys and bones.…
Larimer Humane Society • Fort Collins, CO
Senior confirmed
Nosfuratu
Good day to you! I am Nosfuratu- a sweet n cuddly boy who can't wait to find a place to call home. My friends at the shelter say I am very sweet and a…
Denver Animal Shelter • Denver, CO
Senior confirmed
Gabo
Hello! I am Gabo! I am a sweet but fearful dog looking for my new home. I do need a home without children under the age of 12 and would love to meet a…
Larimer Humane Society • Fort Collins, CO
Senior confirmed
Coco
Coco is a little fluff full of love. She can be a tiny bit shy at first but she warms up quickly and can't wait to be your new lap dog!
Denver Animal Shelter • Denver, CO
Senior confirmed
Rocky heeler
Rocky is very calm, sweet and seems to always be in a good mood, happy to join any activity or just be around. He has unique fuzzy heeler coloring, mo…
San Nicola Dog Rescue • westminster, CO
10+ years
Sky #3
Animal Rescue of the Rockies believes every pet should find a wonderful and caring home. To ensure Sky #3 finds the best possible home, we ask you fil…
Animal Rescue of the Rockies • Aurora, CO
Senior confirmed
Toby
Corgi lovers meet Toby! He is sweet, loveable and loves to play. He can be a little sensitive with some handling, so any kids in the home should be ol…
Denver Animal Shelter • Denver, CO
10+ years
Mika
Hello Everybody! My name is Mika (mee-kuh). I’m a Dalmatian mix, and a little bit bigger girl (because I am tall), but I only weigh about 55-57 pounds…
Dalmatian Rescue of Colorado • Fort Collins, CO
Senior confirmed
Mack
Breed: Rottweiler mix Age: 7 yearsSex: Male Weight: 86 lbs. Color: Black/Tan Spayed/Neutered: Yes!________________________________________ABOUT MEMack…
Summit County Animal Control • Frisco, CO
Senior confirmed
Barkula
Hi! I’m Barkula, your future best friend. I love zooming around snuggling up close. My days are filled with excitement, and I’m always ready to share …
Denver Animal Shelter • Denver, CO
Senior confirmed
Toby
Meet Toby, an 8-year-old bundle of love and relaxation! Toby is a laid-back canine companion who thrives on snuggles and cozy moments. With his gentle…
Until They're Home • Fort Collins, CO
Senior confirmed
David Puddy
Meet David Puddy! He is 8 years old and just under 80 pounds. This senior boxer boy is looking for a new home to spend his golden years. He is good wi…
Until They're Home • Fort Collins, CO
Senior confirmed
Cookie Sue
Meet Cookie Sue! Don't let her age fool you! She is an energetic and spirited pup with a lot of love to give. Her shelter friends say she loves sniffi…
Denver Animal Shelter • Denver, CO
Senior confirmed
Leia
Humane Society of the Pikes Peak - Colorado Springs • Colorado Springs, CO
Senior confirmed
Ollie (MY26-88)
Colorado · Not Good with Dogs · Not Good with Cats · Single Dog Home
National Mill Dog Rescue • Colorado Springs, CO
Senior confirmed
Ice (MR26-327)
Colorado · Not Good with Cats · Special Medical Needs · Heartworm+ · Fence Requirement · In Foster Offsite
National Mill Dog Rescue • Colorado Springs, CO
Senior confirmed
Senior dogs in Colorado by breed
Senior dogs in Colorado by city
Shelters & rescues with senior dogs in Colorado
These organizations currently have at least one adoptable senior dog listed on Lily's Second Chance.
- Larimer Humane Society (opens in a new tab) — Fort Collins, Colorado · See Larimer Humane Society’s senior dogs on Lily's Second Chance
- National Mill Dog Rescue (opens in a new tab) — Peyton, Colorado · See National Mill Dog Rescue’s senior dogs on Lily's Second Chance
- Denver Animal Shelter (opens in a new tab) — Denver, Colorado · See Denver Animal Shelter’s senior dogs on Lily's Second Chance
- Until They're Home (opens in a new tab) — Fort Collins, Colorado · See Until They're Home’s senior dogs on Lily's Second Chance
- Adams County Animal Shelter (opens in a new tab) — Brighton, Colorado · See Adams County Animal Shelter’s senior dogs on Lily's Second Chance
- Dumb Friends League (opens in a new tab) — Denver, Colorado · See Dumb Friends League’s senior dogs on Lily's Second Chance
- Riverdale Animal Shelter (opens in a new tab) — Brighton, Colorado · See Riverdale Animal Shelter’s senior dogs on Lily's Second Chance
- Humane Society of the Pikes Peak Region — Pueblo (opens in a new tab) — Pueblo, Colorado · See Humane Society of the Pikes Peak Region — Pueblo’s senior dogs on Lily's Second Chance
- Animal Rescue of the Rockies (opens in a new tab) — Aurora, Colorado · See Animal Rescue of the Rockies’s senior dogs on Lily's Second Chance
- Evergreen Animal Protective League (opens in a new tab) — Evergreen, Colorado · See Evergreen Animal Protective League’s senior dogs on Lily's Second Chance
- Humane Society of the Pikes Peak - Colorado Springs — Colorado Springs, Colorado · See Humane Society of the Pikes Peak - Colorado Springs’s senior dogs on Lily's Second Chance
- Ace of Hearts Dog Rescue - CO (opens in a new tab) — Boulder, Colorado · See Ace of Hearts Dog Rescue - CO’s senior dogs on Lily's Second Chance
- Aurora Animal Care (opens in a new tab) — Aurora, Colorado · See Aurora Animal Care’s senior dogs on Lily's Second Chance
- Aurora Animal Shelter (opens in a new tab) — Aurora, Colorado · See Aurora Animal Shelter’s senior dogs on Lily's Second Chance
- Colorado Animal Rescue (opens in a new tab) — Glenwood Springs, Colorado · See Colorado Animal Rescue’s senior dogs on Lily's Second Chance
- The Good Life Dog Rescue - Denver — Highlands Ranch, Colorado · See The Good Life Dog Rescue - Denver’s senior dogs on Lily's Second Chance
- Summit County Animal Control and Shelter (opens in a new tab) — Frisco, Colorado · See Summit County Animal Control and Shelter’s senior dogs on Lily's Second Chance
- Colorado Puppy Rescue (opens in a new tab) — Parker, Colorado · See Colorado Puppy Rescue’s senior dogs on Lily's Second Chance
- Golden Growls Senior Rescue (opens in a new tab) — Loveland, Colorado · See Golden Growls Senior Rescue’s senior dogs on Lily's Second Chance
- NOCO Humane Larimer Campus (opens in a new tab) — Loveland, Colorado · See NOCO Humane Larimer Campus’s senior dogs on Lily's Second Chance
- Old Soul Canine Rescue (opens in a new tab) — Nederland, Colorado · See Old Soul Canine Rescue’s senior dogs on Lily's Second Chance
- Summit County Animal Control — Frisco, Colorado · See Summit County Animal Control’s senior dogs on Lily's Second Chance
- White Rose Sanctuary (opens in a new tab) — Colorado Springs, Colorado · See White Rose Sanctuary’s senior dogs on Lily's Second Chance
- Animal Aid Brigade - Colorado — Denver, Colorado · See Animal Aid Brigade - Colorado’s senior dogs on Lily's Second Chance
Low-cost spay, neuter and vet care in Colorado
Programs that help Colorado adopters keep a dog healthy on a budget. Each page was checked on 2026-09-10; confirm current hours and eligibility with the organization.
- Spay / neuterHumane Colorado Spay/Neuter Clinic (opens in a new tab) — Affordable spay and neuter surgery for owned cats and dogs at the Denver veterinary hospital at CSU Spur.
- Low-cost vet careHumane Colorado Community Veterinary Services (opens in a new tab) — Denver hospital offering urgent care, surgery, dental care, wellness clinics and affordable vaccinations.
- Spay / neuterHumane Society of the Pikes Peak Region Colorado Springs Spay and Neuter Services (opens in a new tab) — Low cost spay and neuter packages for cats and dogs at the Colorado Springs clinic, booked online.
- Spay / neuterHumane Society of Boulder Valley Spay and Neuter Information (opens in a new tab) — Spay and neuter surgery for dogs, cats and small animals with discounts for income qualified local families.
- Low-cost vet careHumane Society of the Pikes Peak Region Veterinary Services (opens in a new tab) — Wellness exams, vaccinations and a mobile clinic from Colorado Springs and Pueblo shelter clinics.
Senior dogs in other states
Adopting a senior dog in Colorado — FAQ
What counts as a senior dog?
Most shelters and vets consider a dog "senior" around age 7, though large breeds often age sooner and small breeds a little later. Every dog listed here is 7 years or older.
How do I adopt a senior dog in Colorado?
Open any dog's profile to see which shelter or rescue is caring for them, then use the adoption link or contact details to apply directly with that organization. Lily's Second Chance gathers senior dogs in one place so they're easier to find — the adoption itself happens through the local group.
How much does it cost to adopt a senior dog in Colorado?
Adoption fees vary by organization, but senior dogs are frequently discounted or sponsored because they wait the longest. Many rescues also begin any needed medical care before adoption. The dog's profile or the shelter can confirm the current fee.
Are senior dogs harder to care for?
Usually not. Older dogs are typically calmer and already trained, which makes the first weeks far easier than with a puppy. Some have age-related needs like a special diet or joint support, and the listing or shelter will tell you what to expect.
Can I adopt a senior dog from another city in Colorado?
Yes. Most shelters and rescues in Colorado welcome adopters from anywhere in the state, and some can arrange transport within Colorado for the right match. Open a dog's profile to see the organization's contact details and ask them directly how their process works.
What should I expect in the first weeks after adopting a senior dog in Colorado?
Senior dogs usually settle in faster than puppies because they're already past the most demanding stage. Expect a brief adjustment period — they may be shy at first, then relax into their personality. A consistent routine, a comfortable spot to rest, and patience are usually all it takes.
Can I foster a senior dog in Colorado instead of adopting?
Many shelters and rescues in Colorado offer foster programs — sometimes with a foster-to-adopt path so you can try the match before committing. Fostering is especially valuable for senior dogs because it gets them out of a kennel and into a calm home while they wait for their forever family. Ask the organization on any dog's profile whether fostering is available.
Are senior dogs good with children or other pets in a Colorado home?
Many senior dogs are calm, gentle, and well-suited to family life — but it depends on the individual dog more than anything else. The shelter or rescue caring for each dog can tell you their specific history with children, cats, and other dogs before you apply. Many organizations offer meet-and-greets to make sure the match is right for everyone.
Guides to help you decide
Getting started
Why Adopt a Senior Dog? 7 Reasons Older Dogs Make Wonderful Companions
Senior dogs are often calm, house-trained, and overlooked at shelters. Here are seven honest reasons an older dog may be the best companion you ever bring home.
6 min readUnderstanding ageHow Old Is a "Senior" Dog? Senior Age by Breed and Size
A dog is not "old" at the same age across the board — size and breed change everything. Here is how to tell when a dog becomes a senior, and what it means for care.
5 min readCare & healthCaring for a Senior Dog: Health, Diet, and Everyday Comfort
How to keep an older dog healthy and comfortable — vet care, senior-appropriate diet, joint and dental health, exercise, and simple home adjustments that make a big difference.
8 min readKnow a senior dog in Colorado who needs a home?
Shelters and rescues can list adoptable senior dogs for free.