Senior confirmed
Harvey
Williamson County Regional Animal Shelter • Georgetown, TX
Senior Mixed Breed dogs
Senior Mixed Breed dogs for adoption
Meet 235 adoptable senior Mixed Breed dogs (age 7+) from shelters and rescues across the country. Older dogs are often calm, house-trained, and ready to love from day one. Showing 1–30 of 235 below.
Senior Mixed Breeds are often overlooked in favor of puppies, yet they're frequently house-trained, settled in temperament, and ready to bond immediately. Because they're fully grown, you already know roughly how big they are and what they're like — making an older Mixed Breed one of the most predictable and rewarding dogs you can welcome home.
Last updated July 12, 2026 at 9:30 AM EDT. Listings refresh automatically, usually every 12 hours.
Available senior Mixed Breed dogs
Senior confirmed
Ruger
Ruger - the total package wrapped up in one incredibly handsome hound! This shy guy may take a little time to warm up, but once he trusts you, you'll …
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Tino
Tino is a loving senior dog who will be a loyal companion to anyone willing to give him a chance. With a friendly demeanor, he greets everyone with a …
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Xavier
Xavier is an 8-year-old sweetheart ready for a new chapter. With his soft coat, good leash manners, and affectionate nature, he'll make a wonderful co…
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Castle
Housetrained · Foster Needed · Good with Dogs · Walks well on a leash
Weatherford Wags • Weatherford, TX
Senior confirmed
Sampson
Sampson (a.k.a. Sammy, Sam, Sam-Sam): Serious, dignified... also a bit goofy... really loving... calm... and full of fun. Everything you'd want rolled…
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Jazz
Meet JAZZ- Your Gentle, Loving Companion! Jazz is the definition of sweetness. This senior beauty is gentle to her core-she takes treats with utmost p…
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Senior confirmed
Cora
A New Beginning for Cora Cora is a sweet 9-year-old girl looking for a second chance at happiness. She was adopted from our shelter as a puppy nine ye…
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Dr. Wiggles
Meet Dr. Wiggles, the senior dog with a PhD in Love and Laughter! His cuddly nature and gentle spirit make every day a joy. He loves to walk around wh…
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
10+ years
Gina
Introducing Gina! She's a people person and she's so excited to meet you! Gina has some vision impairment, but she doesn't let that stop her from gett…
Williamson County Regional Animal Shelter • Georgetown, TX
10+ years
Senior confirmed
Senior confirmed
Brooks
Brooks is a 7 years, 1 month old male mixed-breed (medium, up to 44 lbs fully grown) at Williamson County Regional Animal Shelter in Georgetown, TX. S…
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Senior confirmed
Senior confirmed
Fiji
Lived with Dogs · Knows Basic Commands · Fast Pass
Jacksonville Humane Society • Jacksonville, FL
10+ years
Senior confirmed
Gravy
Do you want a side of Gravy with that? Meet Gravy - a handsome 9-year-old gentleman with the best smile around! This sweet boy is new to the shelter, …
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Bell Bottoms
Bell Bottoms is a sweet senior lady with so much love to give. She's friendly, affectionate, and adores people of all ages. She gets along well with o…
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Senior confirmed
Senior confirmed
Rocko
Housetrained · Leash Trained · Dog Selective! · Not Good with Cats · No Small Animals · Ask the Adoption Counselor about my special Behavior Waiver :)…
highcountryhumane.org
Senior confirmed
Senior confirmed
Benji
Meet Benji, the epitome of cuteness with those adorable ears that will steal your heart! This smart and strong pup is friendly and playful with older …
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
Mustang
Mustang is a sweet, 65-lb gentleman with a tender heart who's looking for a calm, loving place to call home. He may be a little reserved at first and …
Williamson County Regional Animal Shelter • Georgetown, TX
Senior confirmed
10+ years
10+ years
Lexi
Wanted: to meet my furever family. Are you looking to open your home to a new pet? Learn more about this pet and others near you looking to find their…
Spartanburg Humane Society • Spartanburg, SC
Senior Mixed Breed dogs by state
Other breeds
Adopting a senior Mixed Breed — 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 Mixed Breed?
Open a dog's profile to see the shelter or rescue caring for them, then follow the adoption link or contact details to apply directly with that organization.
Are senior Mixed Breed dogs a good fit for first-time adopters?
Often, yes. An older Mixed Breed is usually past the high-energy puppy stage and may already know basic commands, which can make ownership easier to ease into. Each profile and shelter can tell you about that dog's individual personality and needs.
Why adopt a senior dog instead of a puppy?
Senior dogs are calmer, usually house-trained, and let you skip the chewing and sleepless nights — and because they are the hardest to place, adopting one can quite literally save a life that might otherwise run out of time.
Are senior Mixed Breed dogs good with children or other pets?
It depends on the individual dog more than the breed alone. Each dog's profile and the shelter or rescue caring for them can tell you about their history with kids, cats, or other dogs. Senior dogs are often calmer and more predictable than puppies, which can make reading compatibility easier before you commit.
How much does it cost to adopt a senior Mixed Breed?
Adoption fees vary by shelter and rescue, but senior dogs are frequently discounted or even sponsored — because they wait the longest, many organizations offer reduced fees or cover initial vet care. Open a dog's profile and ask the organization directly for their current fee and what it includes.
Can I foster a senior Mixed Breed instead of adopting?
Many shelters and rescues offer a foster program, sometimes with a foster-to-adopt path. Fostering a senior Mixed Breed gets them out of a kennel and into a calm home — which is especially beneficial for older dogs who find shelter life stressful. Ask the organization on any dog's profile whether fostering is an option.
Know a senior dog who needs a home?
Shelters and rescues can list adoptable senior dogs for free.