Chihuahua Adoption in O Fallon, MO: Chihuahua Puppies for Sale in O Fallon, MO

Adopt a Chihuahua near you in O Fallon, Missouri

These Chihuahuas are available in O Fallon, Missouri.

ROSIE

Chihuahua

Female, 11 yrs 8 mos

St. Peters, MO

Size

(when grown) Small 25 lbs (11 kg) or less

Details

Spayed or Neutered,

Story

Meet Rosie — 11-Year-Old Chihuahua Rosie lost her home on 2/12/26 after her loving owners became ill. At 11 years old, this little lady is hoping to find a calm, gentle home where she can spend her golden years feeling safe and loved.Rosie may be small, but she has a confident and independent personality. Unlike many Chihuahuas who prefer to be carried everywhere, Rosie likes to travel on her own four paws and explore the world around her. She walks beautifully on leash and would enjoy daily strolls with her person.Rosie is very friendly with people and happily allowed visitors of all ages to pet her. While she’s not a dog who wants to be held constantly, she will eventually settle into your lap once she feels comfortable — especially if you`re relaxing on the floor with her.When meeting other dogs, Rosie can be a little nervous. She was initially vocal around other dogs but did show interest in a calmer dog once the environment quieted down. Because of this, she may be able to live with a calm dog with a proper introduction.Rosie would do best in a quiet home with gentle owners who understand Chihuahua personalities and can give her the peaceful environment she deserves. A senior household or a calmer home with children over 10 would likely suit her best.After losing the only home she’s known, Rosie is ready for a soft place to land — and someone to share her walks, naps, and quiet companionship with.

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Bea

Chihuahua

Female, Adult

O'Fallon, MO

Size

(when grown) Small 25 lbs (11 kg) or less

Details

Good with dogs, Good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,

Story

Sweet, loving, cautiousBea is a sweet, loving, headstrong cautious 7 yr old chi mix, who came to rescue as an owner surrender. Once she warms up to you she will be your best friend, and want to give you all her love. She is cautious, timid, which comes across as barky when people come into her space,sweet, happy loving once she has decided that you are family. She is potty trained, but if she doesn't need to go out she will ignore your requests to do so. She does good with dogs and canine patient cats, but can be a bit jealous, (growly) if other 4 leggers want attention from her person. A home with no or patient older children would be best, a soft bed and warm laps are a must. If you think you may be the love of Bea's life please visit allpawsrescue.info and give this girl a chance. All pets are spayed/neutered, microchipped, up to date on vaccinations and on a flea/tick preventative. Cats are tested for FIV/FeLV and dogs are tested for heartworms. Adoption fee is $150 for cats and $200 for dogs. To meet this pet, please fill out a dog application or cat application. Not able to adopt? Inquire about fostering or sponsoring this pet. For more information visit www.allpawsrescue.info. March 7, 2026, 8:12 pm

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Or, how about these Chihuahuas in cities near O Fallon, Missouri

These Chihuahuas are available for adoption close to O Fallon, Missouri.

ROSIE

Chihuahua

Female, 11 yrs 8 mos

St. Peters, MO

Size

(when grown) Small 25 lbs (11 kg) or less

Details

Spayed or Neutered,

Story

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Bea

Chihuahua

Female, Adult

O'Fallon, MO

Size

(when grown) Small 25 lbs (11 kg) or less

Details

Good with dogs, Good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,

Story

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Ruby AB

Chihuahua Miniature Pinscher

Female, 1 yr 2 mos

St Louis, MO

Size

(when grown) Small 25 lbs (11 kg) or less

Details

Good with dogs, Spayed or Neutered,

Story

Meet Ruby! This sweet young lady is everything wrapped up in one adorable little package. Ruby was rescued from a hoarding situation where she lived with many dogs in a small apartment with very little human interaction. Because of that, the world is still new to her — but she’s learning every day that it can be a safe and happy place. Ruby bonds easily with other dogs and truly thrives with canine companionship. She looks to other dogs for comfort and guidance, and meeting new dog friends is her absolute favorite thing! A confident, friendly dog in her forever home would help her continue to blossom. If you’re looking for a dog who instantly bonds with people, Ruby may not be your girl just yet. She needs a patient, loving, and understanding home that will give her the time and space to build trust at her own pace. Once she feels safe, you’ll see her sweet and silly personality shine. Ruby may be slow to trust, but she’s incredibly observant and learns quickly. From chasing her own shadow to hopping up on her hind legs to catch a moth, her goofy curiosity and innocent spirit will absolutely melt your heart. With patience, love, and a cozy spot to curl up at night, Ruby will grow into the most loyal and devoted companion. Local adoption only $200 (in TX)

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Baby Bat DG*

Chihuahua Miniature Pinscher

Male, 8 yrs 1 mo

St Louis, MO

Size

(when grown) Small 25 lbs (11 kg) or less

Details

Good with cats, Spayed or Neutered,

Story

Baby Bat embodies the personality, uniqueness and likeness of the Batman. First, he works alone. No sidekicks or partners. He prefers solitude and his space. Baby Bat has lived with his foster and her dog pack for 5 years, he gets along with them but tolerates them at most. He would do well in a home where he is the only dog, no children, and adults only. Next, Baby Bat is an apex predator. Which means he needs his sleep and food and not to be interrupted or coddled when given either. Baby Bat is not a lap or cuddly dog. Finally, did we mention Baby Bat is a Chihuahua mix? That's a really important detail! Baby Bat is a great and loyal dog seeking a great family to adopt him! Local adoption fee is $200 (in TX) Out of state adoption fee is $400 (includes transport to your area - $50 Temporary Fuel Charge will be added)

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Tango

Chihuahua Terrier (Unknown Type, Small)

Male, 9 yrs

Bridgeton, MO

Size

(when grown) Small 25 lbs (11 kg) or less

Details

Good with dogs, Spayed or Neutered, Shots are up-to-date,

Story

Tango is a gentle 9-year-old terrier mix weighing just 12 pounds, with a heart that craves love and connection—on his own terms. He adores attention and affection and is happiest when his person sits nearby, talks to him, and showers him with gentle love. While he isn’t a lapdog, Tango enjoys being close and feeling included. Tango also appreciates his independence and likes having time to himself. He’s perfectly content relaxing quietly on his own, making him a great match for a calm household that respects his need for personal space. He enjoys life’s simple pleasures: going outside and laying in the sun, chewing on bully sticks and other chewies, and playing with toys—especially ones that make noise or have squeakers. Tango would enjoy regular walks and, as long as he’s walked frequently and monitored on a leash, he does not require a fenced yard. He should not be left unsupervised outside. Tango gets along well with other dogs, particularly those his own size, and would do well in a home with or without other dogs. He’s happy sharing space but doesn’t demand constant interaction. At night, Tango snuggles into his comfy doggie bed in his foster mom’s bedroom and sleeps quietly through the night. While other dogs may climb into the big bed, Tango prefers his own cozy spot—comforted simply by knowing his person is nearby. With his peaceful temperament, gentle affection, and independent streak, Tango would thrive in a quiet, loving home where companionship is balanced with respect for his space. If you’re looking for a sweet senior dog who offers calm devotion without being clingy, Tango is ready to find his forever home. Tango is neutered, up to date on all his vaccinations, is heartworm negative and on heartworm preventative. He’s had a dental, is microchipped and dewormed. Tango’s adoption fee is $300. Out of state adopters are responsible for arranging transport. WE DO NOT SHIP DOGS. If you're looking for a very sweet and lovable little guy to join your family, please fill out an application on AAP’s website.

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Bubba

Chihuahua

Male, 8 yrs 1 mo

Bridgeton, MO

Size

(when grown) Small 25 lbs (11 kg) or less

Details

Good with dogs, Spayed or Neutered, Shots are up-to-date,

Story

Bubba is an 8-year-old, 5-pound bundle of love with a calm, gentle temperament and a surprisingly playful spirit. Bubba is active, curious, and full of life. He absolutely loves food and happily takes treats, but his favorite place is right by your side. Whether he’s cuddling on the couch or snuggling up in bed at night, Bubba is a true little shadow who loves being close to his person. Bubba rarely barks and has wonderful manners. While he’s not a big fan of the crate, he will eventually settle in and does best in a cozy, comforting environment where he feels safe and loved. If you’re looking for a loyal, affectionate companion who’s the perfect mix of playful and cuddly, Bubba might just be your perfect match. Bubba is neutered, up to date on all vaccines, heart worm negative, on heartworm preventative, de-wormed, had a dental, and microchipped. Bubba’s adoption fee is $325.00. Please go to our website aaprescue.org to learn about our adoption process.

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Chihuahua puppies and dogs in O Fallon, Missouri

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Adopt a Chihuahua near you in O Fallon, Missouri

These Chihuahuas are available in O Fallon, Missouri.

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These Chihuahuas are available for adoption close to O Fallon, Missouri.

Search for a Chihuahua puppy or dog

Chihuahua puppies and dogs in nearby cities

Related breeds in O Fallon, Missouri

Chihuahua shelters & rescues in O Fallon, Missouri

Looking for a specific shelter or rescue?

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Chihuahua basics

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