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 dogs in Colorado
Senior dogs for adoption in Colorado
Meet 93 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 31–60 of 93 below.
Last updated September 24, 2026 at 2:23 PM EDT. 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. Always confirm availability and adoption requirements directly with the shelter or rescue.
28 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
93 senior dogs available in Colorado.
Senior confirmed
Daryl
Meet Daryl! He is a 9 year old Plott Hound mix looking for a new home to spend his golden years. He is a bonded pair with Jesse. Daryl is a sweet boy …
Until They're Home • Fort Collins, CO
10+ years
Millani
Millani is a sweet older gal with a clam relaxing atmosphere. She is sweet, easy to walk, and loves everyone. She did great meeting other dogs here at…
Denver Animal Shelter • Denver, CO
Senior confirmed
Pops #1
Animal Rescue of the Rockies believes every pet should find a wonderful and caring home. To ensure Pops finds the best possible home, we ask you fill …
Animal Rescue of the Rockies • Aurora, CO
10+ years
Chloe
Hi, I'm Chloe! I am a fluffy and friendly pup looking for a new home. I can be fearful when meeting new people and in new situations, so I need to fin…
Larimer Humane Society • Fort Collins, CO
Senior confirmed
Marley
Marley is an 8 yrs old, 100 lbs, half Great Pyrenees and half Brazilian Mastiff gentle giant. She has been raised with love, is well-trained and, alth…
Mountain Pet Rescue • Tabernash, CO
10+ years
Ammo
Meet our sweet, spunky boy who is ready to steal your heart and fill your home with joy! This friendly little guy absolutely thrives on attention and …
Adams County Animal Shelter • Brighton, CO
Senior confirmed
Mama
Hey sweet Mama! This girl is a friendly lovely lady. She gets very excited to go outside so be prepared with a leash and expect some initial pulling a…
Dumb Friends League • Denver, CO
Senior confirmed
10+ years
Sarge
Hi there, I'm Sarge. I have the most beautiful, soulful puppydog eyes and a personality to match. I love attention and going out for walks, or to lay …
Larimer Humane Society • Fort Collins, CO
10+ years
Raiden
Meet Raiden! He’s a sweet senior pit bull with a great history around kids. Raiden is an excellent walker, loves being outside, and never turns down a…
Adams County Animal Shelter • Brighton, CO
Senior confirmed
Luna
Hello! I am Luna! I am a wonderful dog that is looking for my new home. I like to escape so I would do best in a home with a 6ft wooden fence. I look …
Larimer Humane Society • Fort Collins, CO
10+ years
Dexter
Important Information Please read! If you are interested in me after reading about me, please visit my site, http://www.breederadoptions.org and follo…
Breeder Release Adoption Service • Bon Carbo, CO
10+ years
Flowers
Important Information Please read! If you are interested in me after reading about me, please visit my site, http://www.breederadoptions.org and follo…
Breeder Release Adoption Service • Bon Carbo, CO
Senior confirmed
Sydney
Biography Important Information Please read! If you are interested in me after reading about me, please visit my site, http://www.breederadoptions.org…
Breeder Release Adoption Service • Bon Carbo, CO
Senior confirmed
Kylie
Meet Kylie! Kylie is a 7 year old cattle dog looking for a new home. She has lots of energy and loves to be the center of attention! She can do well w…
Until They're Home • Fort Collins, CO
Senior confirmed
Dingo
This gentle boy brings a friendly spirit and an independent streak wherever he goes. He walks wonderfully on leash and already knows a few basics—plus…
Adams County Animal Shelter • Brighton, CO
Senior confirmed
Kitsune Courtsey Listing
All people inquiring about pets listed as Courtesy Listings on the EAPL website and/or EAPL posting adoption boards should contact the current pet own…
Evergreen Animal Protective League • Evergreen, 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
Brodie
Brodie is a gentle soul with a tender heart. She thrives in a quiet, predictable environment and is hoping to find a home that can match her calming e…
Adams County Animal Shelter • Brighton, 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
10+ years
Panda
PRANCING PANDA This adorable little senior furball only wants two things: 1) to lay by your feet, and 2) to PRANCE across a grassy field! When Panda a…
Evergreen Animal Protective League • Evergreen, 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
Pinto
Pinto is an active 12-year-old shih tzu. He is very friendly with people and is thriving in a multi-dog household. He can use the dog door, was very w…
San Nicola Dog Rescue • westminster, CO
Senior confirmed
Ivory
Hi! I'm Ivory and I'm a fun older pup who is looking for a home where I can be the only pet. I don't mind meeting other dogs out on walks but I need a…
Larimer Humane Society • Fort Collins, CO
10+ years
Bohdi (JA26-40)
Colorado · Good with Dogs · Heartworm+ · Special Medical Needs · Good with Kids
National Mill Dog Rescue • 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 · Adult-Only Home Preferred · Special Medical Needs · Heartworm+
National Mill Dog Rescue • Colorado Springs, CO
Senior confirmed
Senior confirmed
Tracey (AP26-67)
Colorado · Requires Another Dog · Good with Dogs · Fence Requirement
National Mill Dog Rescue • Colorado Springs, CO
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.
- National Mill Dog Rescue (opens in a new tab) — Peyton, Colorado · See National Mill Dog Rescue’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
- Larimer Humane Society (opens in a new tab) — Fort Collins, Colorado · See Larimer Humane Society’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
- 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
- Breeder Release Adoption Service (opens in a new tab) — Bon Carbo, Colorado · See Breeder Release Adoption Service’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
- Denver Animal Shelter (opens in a new tab) — Denver, Colorado · See Denver Animal Shelter’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
- Golden Growls Senior Rescue (opens in a new tab) — Loveland, Colorado · See Golden Growls Senior Rescue’s senior dogs on Lily's Second Chance
- Mountain Pet Rescue (opens in a new tab) — Tabernash, Colorado · See Mountain Pet Rescue’s senior dogs on Lily's Second Chance
- San Nicola Dog Rescue (opens in a new tab) — westminster, Colorado · See San Nicola Dog Rescue’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
- The Good Life Dog Rescue - Denver — Highlands Ranch, Colorado · See The Good Life Dog Rescue - Denver’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
- Dalmatian Rescue of Colorado (opens in a new tab) — Fort Collins, Colorado · See Dalmatian Rescue of Colorado ’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
- HOPE FOR ANIMALS (formerly CCCARL; Clear Creek County Animal Rescue League) (opens in a new tab) — Georgetown, Colorado · See HOPE FOR ANIMALS (formerly CCCARL; Clear Creek County Animal Rescue 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
- Humane Society of the South Platte Valley (opens in a new tab) — Littleton, Colorado · See Humane Society of the South Platte Valley’s senior dogs on Lily's Second Chance
- Lily's Second Chance · See Lily's Second Chance’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.
Know a senior dog in Colorado who needs a home?
Shelters and rescues can list adoptable senior dogs for free.