Senior confirmed
Rocky #19
Please note this dog is NOT an official Underdog dog, and you will be connected with the person who has the dog. Please Contact (Current Owner of Dog)…
Underdog Rescue of Arizona, LLC • Chandler, AZ
Senior dogs in Arizona
Senior dogs for adoption in Arizona
Meet 318 adoptable senior dogs (age 7+) in Arizona. Each one is from a shelter or rescue and ready to give an older dog's quiet, grateful love. Showing 1–30 of 318 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 Arizona 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 Arizona include Pit Bull Terrier, Chihuahua, and German Shepherd, spread across 13 cities and 35 shelters and rescues. Always confirm availability and adoption requirements directly with the shelter or rescue.
35 shelters and rescues in Arizona currently list senior dogs on Lily's Second Chance.
How adoption works in Arizona
Most Arizona listings come from rescue groups, concentrated around Phoenix, Mesa and Chandler. That shapes the experience: rather than dropping in during shelter hours, you will usually apply and then talk with the foster family who knows the dog. Municipal shelters list here too, with walk-in visits.
To move from a listing to a leash, open the profile and contact the organization that has the dog. An application or a conversation comes next, then a meet and greet, and an adoption fee set by the organization, which often covers spay or neuter and vaccinations. Since so many dogs are in the Phoenix area, many groups help arrange transport within the state. The organization on the dog's profile can share that dog's history, requirements and availability.
Available senior dogs in Arizona
318 senior dogs available in Arizona.
Chalupa
Why I'd make a great companion: ~Hi there! My name is Chalupa and I weigh 11 LBS! ~I’m a sweet senior pup with a shy side and a whole lifetime of love…
Arizona Humane Society - Campus for Compassion • Phoenix, AZ
Senior confirmed
Benny
Maricopa County Animal Care & Control • Phoenix, AZ
Senior confirmed
Gandalf
Maricopa County Animal Care & Control • Phoenix, AZ
Senior confirmed
Koda
Maricopa County Animal Care & Control • Phoenix, AZ
10+ years
Baby Girl
Maricopa County Animal Care & Control • Phoenix, AZ
Senior confirmed
Senior confirmed
Senior confirmed
Senior confirmed
Christina (bonded with Duke) (foster needed)
The Big Mutt Network • Vail, AZ
Senior confirmed
Senior confirmed
Blue (Bonded with Bear)
Bonded with Bear Classic velcro, do anything for love, goofball Dane!
The Big Mutt Network • Vail, AZ
Senior confirmed
Senior confirmed
Lilly
Lilly is a great dog, she is loving, house broken, and doesn't have a single mean bone in her body. She is very timid and shy. She has tried to jump t…
The Big Mutt Network • Vail, AZ
Senior confirmed
Duke (bonded with Christina) (foster needed)
The Big Mutt Network • Vail, AZ
Senior confirmed
Xerxes
Meet Xerxes! My favorite thing to do is... be with people. I am a gentle, social dog. What makes me special is... I am quite the gentleman! I am sweet…
The Arizona Center for Animal Rescue and Education • Florence, AZ
Senior confirmed
10+ years
Dash
Angels for Paws Rescue and Sanctuary • Maricopa, AZ
Senior confirmed
Molly
Meet Molly, a charming senior with a heart of gold. Molly's journey began when we rescued her from the Maricopa County shelter. She had been there for…
Angels for Paws Rescue and Sanctuary • Maricopa, AZ
Senior confirmed
Bella
Bella is a stunning Great Dane mix with a heart as big as her paws! This gentle girl is an absolute dream with people—she adores attention, is wonderf…
Angels for Paws Rescue and Sanctuary • Maricopa, AZ
Senior confirmed
Senior confirmed
Gemma
Angels for Paws Rescue and Sanctuary • Maricopa, AZ
Senior confirmed
Selena
Angels for Paws Rescue and Sanctuary • Maricopa, AZ
Senior confirmed
Senior confirmed
Senior confirmed
10+ years
Robbie
Forever Loved Pet Sanctuary • Scottsdale, AZ
10+ years
Bosco and Bugsy
BONDED PAIR: Bosco,15, and Bugsy, 5 have lived together for 5 years. They truly love each other. They are very sweet boys, and it would be great to se…
Arizona Boston Terrier Rescue • Scottsdale, AZ
Senior confirmed
Zoe
Maricopa County Animal Care & Control - East Valley Animal Care Center • Mesa, AZ
Senior confirmed
Ducky
Maricopa County Animal Care & Control - West Valley Animal Care Center • Phoenix, AZ
Senior dogs in Arizona by breed
Senior dogs in Arizona by city
Shelters & rescues with senior dogs in Arizona
These organizations currently have at least one adoptable senior dog listed on Lily's Second Chance.
- Maricopa County Animal Care & Control (opens in a new tab) — Phoenix, Arizona · See Maricopa County Animal Care & Control’s senior dogs on Lily's Second Chance
- Arizona Humane Society - Campus for Compassion (opens in a new tab) — Phoenix, Arizona · See Arizona Humane Society - Campus for Compassion’s senior dogs on Lily's Second Chance
- Maricopa County Animal Care & Control - East Valley Animal Care Center (opens in a new tab) — Mesa, Arizona · See Maricopa County Animal Care & Control - East Valley Animal Care Center’s senior dogs on Lily's Second Chance
- Arizona Humane Society - Sunnyslope (opens in a new tab) — Phoenix, Arizona · See Arizona Humane Society - Sunnyslope’s senior dogs on Lily's Second Chance
- Underdog Rescue of Arizona, LLC (opens in a new tab) — Chandler, Arizona · See Underdog Rescue of Arizona, LLC’s senior dogs on Lily's Second Chance
- The Big Mutt Network (opens in a new tab) — Vail, Arizona · See The Big Mutt Network’s senior dogs on Lily's Second Chance
- 2nd Chance Dog Rescue — Queen Creek, Arizona · See 2nd Chance Dog Rescue’s senior dogs on Lily's Second Chance
- Angels for Paws Rescue and Sanctuary (opens in a new tab) — Maricopa, Arizona · See Angels for Paws Rescue and Sanctuary’s senior dogs on Lily's Second Chance
- Maricopa County Animal Care & Control - West Valley Animal Care Center (opens in a new tab) — Phoenix, Arizona · See Maricopa County Animal Care & Control - West Valley Animal Care Center’s senior dogs on Lily's Second Chance
- Tucson Cold Wet Noses (opens in a new tab) — Tucson, Arizona · See Tucson Cold Wet Noses’s senior dogs on Lily's Second Chance
- Boxer Luv Rescue (opens in a new tab) — Phoenix, Arizona · See Boxer Luv Rescue’s senior dogs on Lily's Second Chance
- Help A Dog Smile (opens in a new tab) — Phoenix, Arizona · See Help A Dog Smile’s senior dogs on Lily's Second Chance
- Lifeline Oro Valley Animal Rescue (opens in a new tab) — Oro Valley, Arizona · See Lifeline Oro Valley Animal Rescue’s senior dogs on Lily's Second Chance
- Sky Sanctuary Rescue (opens in a new tab) — Scottsdale, Arizona · See Sky Sanctuary Rescue’s senior dogs on Lily's Second Chance
- Southwest Oasis Labrador Rescue (opens in a new tab) — Tucson, Arizona · See Southwest Oasis Labrador Rescue’s senior dogs on Lily's Second Chance
- Forever Friends Humane Society — phoenix, Arizona · See Forever Friends Humane Society’s senior dogs on Lily's Second Chance
- PAWS pound Animals worth saving (opens in a new tab) — Mesa, Arizona · See PAWS pound Animals worth saving ’s senior dogs on Lily's Second Chance
- Southern Arizona Beagle Rescue (opens in a new tab) — Tucson, Arizona · See Southern Arizona Beagle Rescue’s senior dogs on Lily's Second Chance
- Adopt A Dog Rescue (opens in a new tab) — Phoenix, Arizona · See Adopt A Dog Rescue’s senior dogs on Lily's Second Chance
- Animal Rescue Friends Ltd (opens in a new tab) — Mesa, Arizona · See Animal Rescue Friends Ltd’s senior dogs on Lily's Second Chance
- Arizona Boston Terrier Rescue (opens in a new tab) — Scottsdale, Arizona · See Arizona Boston Terrier Rescue’s senior dogs on Lily's Second Chance
- Arizona Golden Rescue (opens in a new tab) — Glendale , Arizona · See Arizona Golden Rescue’s senior dogs on Lily's Second Chance
- Back The Blue Pet Rescue (opens in a new tab) — Queen Creek, Arizona · See Back The Blue Pet Rescue’s senior dogs on Lily's Second Chance
- Better Days, Inc. (opens in a new tab) — Scottsdale, Arizona · See Better Days, Inc.’s senior dogs on Lily's Second Chance
Low-cost spay, neuter and vet care in Arizona
Programs that help Arizona 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 / neuterAltered Tails Barnhart Clinic (opens in a new tab) — Nonprofit spay and neuter clinics in Phoenix and Mesa that also offer vaccinations and microchipping.
- Spay / neuterHumane Society of Southern Arizona Affordable Spay/Neuter (opens in a new tab) — Tucson shelter clinic offering affordable spay and neuter surgery with vaccinations by appointment.
- Low-cost vet careMaricopa County Low-Cost Veterinary Services (opens in a new tab) — County directory of affordable veterinary and spay and neuter clinics across the Phoenix metropolitan area.
- Spay / neuterAnimal Defense League of Arizona Spay Neuter Hotline (opens in a new tab) (statewide) — Referral hotline connecting Arizona pet owners with low cost spay and neuter options and community cat services.
Senior dogs in other states
Adopting a senior dog in Arizona — 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 Arizona?
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 Arizona?
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 Arizona?
Yes. Most shelters and rescues in Arizona welcome adopters from anywhere in the state, and some can arrange transport within Arizona 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 Arizona?
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 Arizona instead of adopting?
Many shelters and rescues in Arizona 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 Arizona 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 Arizona who needs a home?
Shelters and rescues can list adoptable senior dogs for free.