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.

Agatha

Chihuahua

Female, Senior

O'Fallon, MO

Size

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

Details

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

Story

Agatha is a 10 year old chihuahua who weighs about 12 pounds. Although technically a senior, Agatha is full of energy and very playful. She is mostly housebroken and does well with other dogs and respectful children. Agatha’s play style with other dogs can be “rough and tumble,“ so it’s important that other dogs in the home are on board with this. Agatha does not enjoy going for walks and will demand to be carried after a few minutes. If you’re interested in learning more about Agatha, email her foster mom at jeanine.sellman@gmail.com or fill out an adoption application.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. January 23, 2026, 4:45 pm

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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. January 24, 2026, 5:12 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.

Agatha

Chihuahua

Female, Senior

O'Fallon, MO

Size

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

Details

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

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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Shrimp LF

Chihuahua Maltese

Male, 10 yrs 8 mos

St Louis, MO

Size

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

Details

Good with kids, Good with dogs, Good with cats, Spayed or Neutered,

Story

Shrimp — a little gentleman with a big heart, weighing in at just 8 lbs. This 10-year-old Chihuahua–Maltese mix we think, is as sweet as they come. Shrimp is a gentle, happy boy who loves nothing more than being close to his person. He’ll happily follow you from room to room, just to make sure you don’t get lost without him. Even though he doesn’t have any teeth, Shrimp is a true foodie at heart — mealtime is his favorite time! He’s crate trained and sleeps well, though sometimes he can’t quite make it through the night, so he wears a diaper just to be safe. House training is still a work in progress, but he’s learning. If you’re looking for a loyal little shadow who will fill your days with love and quiet companionship, Shrimp is ready to wiggle right into your heart. Local Only adoption fee is $200(in TX)

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Baby Bat DG*

Chihuahua Miniature Pinscher

Male, 8 yrs

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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Keke EJS

Chihuahua Mixed Breed (Small)

Female, 5 yrs 4 mos

St Louis, MO

Size

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

Details

Good with dogs, Not good with cats, Spayed or Neutered,

Story

TEXAS ADOPTION ONLY Keke is a cutie pie kind of name. And believe it or not..my life hasn't been a "cutie pie" kind of life, until NOW! Now I am part of the cool kids ;) no hair loss, yeast infection, poor nutrition for me!!!! I am not "hoping" for food today, I have more than I need:) my foster family is just the best! So here are a few facts about me; I am great with other dogs and love a doggy friend in my furever home..no felines though...they r not my favorite friends.... I am looking forward to having my own family, one that will commit to me furever. I ended up in rescue because my mom had to go to a nursing home and none of the family wanted to take care of me...... so here I am looking for you! Don't make me wait too long!! Local adoption fee is $200 (in TX only)

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Tango

Chihuahua Terrier (Unknown Type, Small)

Male, 8 yrs 11 mos

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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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.

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

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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