Senior confirmed
Senior dogs near St. Peters
Senior dogs for adoption in St. Peters, Missouri
Meet 14 adoptable senior dogs (age 7+) in and around St. Peters. Each one is from a local shelter or rescue and ready to give an older dog's quiet, grateful love.
Senior dogs (age 7 and up) wait far longer for homes than puppies, even though they're usually house-trained, settled in temperament, and happy to nap at your feet. Adopting an older dog in and around St. Peters, Missouri means a grateful companion close to home — and often a shorter drive to meet them in person. Always confirm availability and adoption steps directly with the shelter or rescue.
Last updated August 21, 2026 at 2:26 AM EDT. Listings refresh automatically, usually every 12 hours.
Available senior dogs in St. Peters, Missouri
10+ years
Senior confirmed
TILLY
This is Tilly, Tilly was adopted from our shelter as a puppy in 2017. She is now 8 years old and found herself back in the shelter today. The family h…
St Charles County Humane Services • St Peters, MO
Senior confirmed
MILLIE
Millie came to the shelter after being surrendered due to unforeseen circumstances. She arrived very shut down, fearful, and unsure of the world aroun…
St Charles County Humane Services • St Peters, MO
10+ years
TYLER
Tyler 12-year-old Tyler was found as a stray in O’Fallon on 5/20/26. Staff were able to contact his owner, but sadly he was never reclaimed. Despite b…
St Charles County Humane Services • St Peters, MO
Senior confirmed
ANNIE
What dog breed has a ridge on its neck but not all the way down its back, is 39 lbs and brindle? Well… only Annie knows! Annie was found as a stray by…
St Charles County Humane Services • St Peters, MO
Senior confirmed
10+ years
HONEY
Meet Honey — Sweetness That Only Gets Better With Age At 13 years young, Honey is living proof that age is just a number! This lovely senior girl stil…
St Charles County Humane Services • St Peters, MO
10+ years
HAWKEYE
Hawkeye & Remi – Bonded Seniors with Big HeartsHawkeye – 10-year-old Black Lab MixHawkeye is a gentle senior who enjoys the simple things in life—suns…
St Charles County Humane Services • St Peters, MO
10+ years
REMI
Hawkeye & Remi – Bonded Seniors with Big HeartsHawkeye – 10-year-old Black Lab MixHawkeye is a gentle senior who enjoys the simple things in life—suns…
St Charles County Humane Services • St Peters, MO
Senior confirmed
Sacher
Sacher is very sweet. He warms up to new people outside his home very well. He is a little protective of his home, which we are working on. He is pret…
STRAY PAWS RESCUE • St. Peters, MO
Senior confirmed
Senior confirmed
Cleo
Cleo is a loving pit mix who loves playing outside at her foster family’s home. She does like to lead the pack and her more submissive friends don’t s…
STRAY PAWS RESCUE • St. Peters, MO
10+ years
Dottie
Dottie is a sweet girl who is looking for a foster family or a forever family. She is super lovable and friendly with people and loves getting attenti…
STRAY PAWS RESCUE • St. Peters, MO
Other cities in Missouri
Adopting a senior dog in St. Peters — 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 St. Peters?
Open any dog's profile to see the shelter or rescue caring for them near St. Peters, Missouri, then use the adoption link or contact details to apply directly with that organization. Lily's Second Chance simply gathers local senior dogs in one place so they're easier to find.
Are there always senior dogs available in St. Peters?
Availability changes often as dogs are adopted and new ones are listed. If you don't see a senior dog in St. Peters right now, check back soon or browse all of Missouri — new dogs are added regularly.
How much does it cost to adopt a senior dog near St. Peters?
Adoption fees vary by organization, but senior dogs are frequently discounted or sponsored because they wait the longest. Open a dog's profile or contact the shelter or rescue directly for their current fee and any covered vet care.
What should I expect when I bring a newly adopted senior dog home?
Most senior dogs have a brief adjustment period — a few days to a couple of weeks — as they settle into a new home. They're often shy at first, then relax once they feel safe. A calm routine, a comfortable place to rest, and patience make the transition easier for both of you.
Know a senior dog near St. Peters who needs a home?
Shelters and rescues can list adoptable senior dogs for free.