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Rat Terrier puppies and dogs in Boulder, Colorado

Looking for a Rat Terrier puppy or dog in Boulder, Colorado? Adopt a Pet can help you find an adorable Rat Terrier near you.

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Adopt a Rat Terrier near you in Boulder, Colorado

These Rat Terriers are available in Boulder, Colorado.
Photo of Penguin T

Penguin T

Jack Russell Terrier Rat Terrier

Male, Young
Boulder, CO
Size
(when grown) Small 25 lbs (11 kg) or less
Details
Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered,
Story
Meet Penguin Male DOB: May 19, 2023 Weight: 22 lbs Breed: Jack Russell Terrier / Rat Terrier Mix Neutered (Fixed) Vaccinated Microchipped Healthy & Adoption-Ready Personality, Breed Info & Expectations Penguin is an outgoing, friendly little guy with a fun personality and a big zest for life packed into a small body. He loves being around people, enjoys interaction, and carries himself with the confident, entertaining energy Terrier lovers know and adore. He has matured beautifully into a lively companion who still enjoys playtime and activity while also loving affection and companionship from his humans. Penguin thrives when he feels included and part of the action. As a Jack Russell Terrier / Rat Terrier mix, Penguin may show traits such as intelligence, curiosity, alertness, and playful energy. Both breeds are known for being highly engaging, clever little dogs who enjoy staying mentally and physically active. Penguin would thrive in a home that can provide: Daily walks and playtime Mental stimulation and engagement Structure and consistency Companionship and inclusion as part of the family He would make a wonderful companion for someone looking for a social, entertaining, and affectionate dog with lots of personality. Training, Adjustment & What to Expect Many rescue dogs come from very different backgrounds. Some may have previously lived in homes, while others may have come from the streets, overcrowded shelters, neglect situations, or environments where they had little structure or guidance. Because of this, most rescue dogs arrive with only basic training at best, and some may have had no formal training at all. Even dogs who appear well-behaved in foster care or at the rescue are still adjusting and learning. The rescue environment itself also does not always allow for extensive one-on-one training. While we work hard to provide safety, structure, socialization, and basic guidance, adopters should be prepared to continue training and support after adoption. Penguin will benefit from: Positive reinforcement training Structure and consistency Continued socialization and engagement Mental stimulation and routine Patience during adjustment periods Please remember the 3-3-3 Rule: 3 days to decompress 3 weeks to learn your routine 3 months to fully feel at home With patience, stability, and commitment, rescue dogs often blossom into deeply loyal lifelong companions. Owner Responsibilities & Veterinary Care Owning a dog is a lifelong commitment that includes daily exercise, companionship, routine veterinary care, training, mental stimulation, and financial responsibility. Penguin will need: Daily walks, exercise, and interaction Continued training and engagement Routine wellness exams and preventative veterinary care A safe, stable, indoor living environment Consistent veterinary care, proper nutrition, preventative care, and emotional stability are all essential to helping him live a healthy and happy life. Penguin is an indoor family dog and is not to be chained or left outside. Adoption Information If you are interested in adopting this wonderful dog, please complete an adoption application by visiting: https://www.ozzieandfriendsrescue.org/adoptions Thank you for considering adoption through Ozzie and Friends Rescue, a Los Angeles–based rescue dedicated to giving dogs a second chance at a loving home. Our team carefully reviews every application and will reach out to help match you with the right dog for your home and lifestyle. You may be seeing our dogs listed in multiple states because we work hard to give as many of our rescue dogs as possible the opportunity to be seen by loving families beyond our local area. While we are based in Los Angeles, we expand our reach throughout the Western United States and the Midwest to help more dogs find the forever homes they deserve. We understand that transportation and adoption fees can sometimes feel like a big commitment, and we truly appreciate every person who considers opening their heart and home to a rescue dog. Our goal is simply to give these dogs the best chance at being seen, adopted, and loved. Ozzie and Friends Rescue coordinates safe and reliable transport so adopted dogs can travel to their new homes across the Western United States, Canada, and the Midwest. We can’t wait to help you meet your next fur-ever best friend.July 19, 2026, 5:32 pm

Or, how about these Rat Terriers in cities near Boulder, Colorado

These Rat Terriers are available for adoption close to Boulder, Colorado.
Photo of Mira

Mira

Rat Terrier

Female, Young
Littleton, CO
Size
(when grown) -
Details
Good with kids, Good with dogs, Spayed or Neutered,
Story
Meet Mira! Looking for a sweet, playful sidekick? Mira might be your perfect match! At approximately 4 months old, Mira is a small-breed mix who will likely grow to around 20 pounds. She’s smart, curious, and always ready for her next adventure—but her favorite thing in the world is spending time with other dogs. Mira absolutely LOVES other dogs and needs a home with a canine companion. Having another dog to play with and learn from helps her thrive, and she’d be happiest with a built-in best friend. She’s already crate trained and is doing a great job with potty training. At the end of a fun day of playing and exploring, Mira’s favorite place is curled up next to her people for cuddles. If you’re looking for a loving puppy who will keep you smiling, make your dog a new best friend, and happily snuggle up with you every evening, Mira is ready to meet you. Ready to give this adorable girl the forever home she deserves? Reach out for more information on how to adopt!July 18, 2026, 1:23 pm
Photo of Virgo

Virgo

Rat Terrier

Female, 1 mo
Windsor, CO
Size
(when grown) Small 25 lbs (11 kg) or less
Details
Good with dogs,
Story
Virgo is an adorable terrier mix puppy with the most beautiful, soulful eyes that will melt your heart the moment you meet her. Sweet, affectionate, and full of puppy charm, she's ready to find the loving family she's been waiting for. All of Virgo's siblings have already found their fur-ever homes, and now it's her turn! Her mom, Celia, weighs about 25 pounds, though Dad remains a mystery, so Virgo's adult size is an educated guess. Virgo will be ready to head to her forever home the evening of July 27, and she can't wait to begin her next adventure with a family of her own. If you're looking for a loyal companion with a gentle heart and irresistible puppy eyes, Virgo may be the perfect match.
Photo of Penguin T

Penguin T

Jack Russell Terrier Rat Terrier

Male, Young
Boulder, CO
Size
(when grown) Small 25 lbs (11 kg) or less
Details
Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered,
Story
Meet Penguin Male DOB: May 19, 2023 Weight: 22 lbs Breed: Jack Russell Terrier / Rat Terrier Mix Neutered (Fixed) Vaccinated Microchipped Healthy & Adoption-Ready Personality, Breed Info & Expectations Penguin is an outgoing, friendly little guy with a fun personality and a big zest for life packed into a small body. He loves being around people, enjoys interaction, and carries himself with the confident, entertaining energy Terrier lovers know and adore. He has matured beautifully into a lively companion who still enjoys playtime and activity while also loving affection and companionship from his humans. Penguin thrives when he feels included and part of the action. As a Jack Russell Terrier / Rat Terrier mix, Penguin may show traits such as intelligence, curiosity, alertness, and playful energy. Both breeds are known for being highly engaging, clever little dogs who enjoy staying mentally and physically active. Penguin would thrive in a home that can provide: Daily walks and playtime Mental stimulation and engagement Structure and consistency Companionship and inclusion as part of the family He would make a wonderful companion for someone looking for a social, entertaining, and affectionate dog with lots of personality. Training, Adjustment & What to Expect Many rescue dogs come from very different backgrounds. Some may have previously lived in homes, while others may have come from the streets, overcrowded shelters, neglect situations, or environments where they had little structure or guidance. Because of this, most rescue dogs arrive with only basic training at best, and some may have had no formal training at all. Even dogs who appear well-behaved in foster care or at the rescue are still adjusting and learning. The rescue environment itself also does not always allow for extensive one-on-one training. While we work hard to provide safety, structure, socialization, and basic guidance, adopters should be prepared to continue training and support after adoption. Penguin will benefit from: Positive reinforcement training Structure and consistency Continued socialization and engagement Mental stimulation and routine Patience during adjustment periods Please remember the 3-3-3 Rule: 3 days to decompress 3 weeks to learn your routine 3 months to fully feel at home With patience, stability, and commitment, rescue dogs often blossom into deeply loyal lifelong companions. Owner Responsibilities & Veterinary Care Owning a dog is a lifelong commitment that includes daily exercise, companionship, routine veterinary care, training, mental stimulation, and financial responsibility. Penguin will need: Daily walks, exercise, and interaction Continued training and engagement Routine wellness exams and preventative veterinary care A safe, stable, indoor living environment Consistent veterinary care, proper nutrition, preventative care, and emotional stability are all essential to helping him live a healthy and happy life. Penguin is an indoor family dog and is not to be chained or left outside. Adoption Information If you are interested in adopting this wonderful dog, please complete an adoption application by visiting: https://www.ozzieandfriendsrescue.org/adoptions Thank you for considering adoption through Ozzie and Friends Rescue, a Los Angeles–based rescue dedicated to giving dogs a second chance at a loving home. Our team carefully reviews every application and will reach out to help match you with the right dog for your home and lifestyle. You may be seeing our dogs listed in multiple states because we work hard to give as many of our rescue dogs as possible the opportunity to be seen by loving families beyond our local area. While we are based in Los Angeles, we expand our reach throughout the Western United States and the Midwest to help more dogs find the forever homes they deserve. We understand that transportation and adoption fees can sometimes feel like a big commitment, and we truly appreciate every person who considers opening their heart and home to a rescue dog. Our goal is simply to give these dogs the best chance at being seen, adopted, and loved. Ozzie and Friends Rescue coordinates safe and reliable transport so adopted dogs can travel to their new homes across the Western United States, Canada, and the Midwest. We can’t wait to help you meet your next fur-ever best friend.July 19, 2026, 5:32 pm

These pups are in Boulder, Colorado too!

Below are our newest added Rat Terriers available for adoption in Boulder, Colorado. To see more adoptable Rat Terriers in Boulder, Colorado, use the search tool below to enter specific criteria!
Photo of Ollie

Ollie

Jack Russell Terrier

Male, 10 yrs 2 mos
Boulder, CO
Size
(when grown) Small 25 lbs (11 kg) or less
Details
-
Story
Maggie and Ollie are a bonded older duo looking to settle into a new home together! If you`re interested in opening your home and heart for two adorable pups instead of just one, these might be the pair for you. We`re even offering them at a 2-for-1 adoption price to help keep them together in their next home! They can be a bit reserved at first and will need time to transition out of the shelter, but with a little time, they blossom and let their sweet personalities shine! At this time, HSBV will only rehome them to a family either without children or with children over the age of 10.
Photo of Penguin T

Penguin T

Jack Russell Terrier Rat Terrier

Male, Young
Boulder, CO
Size
(when grown) Small 25 lbs (11 kg) or less
Details
Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered,
Story
Meet Penguin Male DOB: May 19, 2023 Weight: 22 lbs Breed: Jack Russell Terrier / Rat Terrier Mix Neutered (Fixed) Vaccinated Microchipped Healthy & Adoption-Ready Personality, Breed Info & Expectations Penguin is an outgoing, friendly little guy with a fun personality and a big zest for life packed into a small body. He loves being around people, enjoys interaction, and carries himself with the confident, entertaining energy Terrier lovers know and adore. He has matured beautifully into a lively companion who still enjoys playtime and activity while also loving affection and companionship from his humans. Penguin thrives when he feels included and part of the action. As a Jack Russell Terrier / Rat Terrier mix, Penguin may show traits such as intelligence, curiosity, alertness, and playful energy. Both breeds are known for being highly engaging, clever little dogs who enjoy staying mentally and physically active. Penguin would thrive in a home that can provide: Daily walks and playtime Mental stimulation and engagement Structure and consistency Companionship and inclusion as part of the family He would make a wonderful companion for someone looking for a social, entertaining, and affectionate dog with lots of personality. Training, Adjustment & What to Expect Many rescue dogs come from very different backgrounds. Some may have previously lived in homes, while others may have come from the streets, overcrowded shelters, neglect situations, or environments where they had little structure or guidance. Because of this, most rescue dogs arrive with only basic training at best, and some may have had no formal training at all. Even dogs who appear well-behaved in foster care or at the rescue are still adjusting and learning. The rescue environment itself also does not always allow for extensive one-on-one training. While we work hard to provide safety, structure, socialization, and basic guidance, adopters should be prepared to continue training and support after adoption. Penguin will benefit from: Positive reinforcement training Structure and consistency Continued socialization and engagement Mental stimulation and routine Patience during adjustment periods Please remember the 3-3-3 Rule: 3 days to decompress 3 weeks to learn your routine 3 months to fully feel at home With patience, stability, and commitment, rescue dogs often blossom into deeply loyal lifelong companions. Owner Responsibilities & Veterinary Care Owning a dog is a lifelong commitment that includes daily exercise, companionship, routine veterinary care, training, mental stimulation, and financial responsibility. Penguin will need: Daily walks, exercise, and interaction Continued training and engagement Routine wellness exams and preventative veterinary care A safe, stable, indoor living environment Consistent veterinary care, proper nutrition, preventative care, and emotional stability are all essential to helping him live a healthy and happy life. Penguin is an indoor family dog and is not to be chained or left outside. Adoption Information If you are interested in adopting this wonderful dog, please complete an adoption application by visiting: https://www.ozzieandfriendsrescue.org/adoptions Thank you for considering adoption through Ozzie and Friends Rescue, a Los Angeles–based rescue dedicated to giving dogs a second chance at a loving home. Our team carefully reviews every application and will reach out to help match you with the right dog for your home and lifestyle. You may be seeing our dogs listed in multiple states because we work hard to give as many of our rescue dogs as possible the opportunity to be seen by loving families beyond our local area. While we are based in Los Angeles, we expand our reach throughout the Western United States and the Midwest to help more dogs find the forever homes they deserve. We understand that transportation and adoption fees can sometimes feel like a big commitment, and we truly appreciate every person who considers opening their heart and home to a rescue dog. Our goal is simply to give these dogs the best chance at being seen, adopted, and loved. Ozzie and Friends Rescue coordinates safe and reliable transport so adopted dogs can travel to their new homes across the Western United States, Canada, and the Midwest. We can’t wait to help you meet your next fur-ever best friend.July 19, 2026, 5:32 pm
Photo of Candy K

Candy K

Jack Russell Terrier Feist

Female, Young
Boulder, CO
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
Good with kids, Good with dogs, Spayed or Neutered,
Story
Meet Candy Female DOB: February 14, 2026 Weight: 9 lbs current (medium) Breed: Terrier Mix Spayed (Fixed): Pending (age-appropriate) Vaccines: Pending (age-appropriate) Microchipped Healthy & Adoption-Ready Personality, Breed Info & Expectations Candy is an incredibly sweet, mellow puppy with a gentle personality and a soft, loving nature. She enjoys affection, companionship, and quietly staying close to her people. While she still has playful puppy curiosity, Candy carries herself with a calmness that makes her especially comforting and easy to adore. She loves cuddles, enjoys being near her humans, and has the kind of tender personality that melts hearts quickly. Candy would make a wonderful companion for someone looking for a puppy with both sweetness and a calmer temperament. As a growing Terrier mix puppy, Candy will likely mature into an intelligent, affectionate companion with playful personality and strong bonds with her family. Terrier mixes are often known for being loyal, engaging dogs full of personality and charm. Candy would thrive in a home prepared for: Ongoing puppy training and supervision Structure and consistency Daily companionship and interaction Positive socialization and enrichment A lifelong commitment to her emotional and physical well-being Puppies require significant time, patience, supervision, training, and financial responsibility as they grow and develop. Training, Adjustment & What to Expect Many rescue puppies come from uncertain beginnings and may not have had structure, socialization, or training before arriving at rescue. Even very young puppies require significant guidance and supervision to properly learn how to navigate life in a home environment. Because of this, adopters should be prepared for: Potty training and accidents Teething and chewing stages Crate training and leash training Nighttime wakeups and supervision Ongoing socialization and structure The rescue environment itself also does not always allow for extensive one-on-one training. While we work hard to provide safety, basic structure, and socialization, adopters should expect to continue training and support after adoption. Candy will need: Positive reinforcement training Frequent potty breaks and supervision Patience and consistency Daily routine and structure Continued socialization and exposure Please remember the 3-3-3 Rule: 3 days to decompress 3 weeks to learn your routine 3 months to fully feel at home With patience, structure, and love, puppies like Candy grow into wonderful lifelong companions. Owner Responsibilities & Veterinary Care Owning a puppy is a lifelong commitment that includes training, exercise, routine veterinary care, financial responsibility, and emotional commitment throughout every stage of life. Candy will need: Ongoing puppy training and guidance Routine veterinary visits and vaccine boosters Preventative care including flea, tick, and heartworm prevention Proper nutrition and growth monitoring Daily exercise, enrichment, and companionship A safe, stable, indoor living environment Puppies require regular veterinary care throughout their first year, including booster vaccines, wellness exams, and spay surgery when age-appropriate. Because Candy is still young, adopters should also be prepared for the normal puppy phases that come with growing and learning, including chewing, teething, accidents, and continued social development. Candy is an indoor family dog and is not to be chained or left outside. Adoption Information If you are interested in adopting this wonderful puppy, please complete an adoption application by visiting: https://www.ozzieandfriendsrescue.org/adoptions Thank you for considering adoption through Ozzie and Friends Rescue, a Los Angeles–based rescue dedicated to giving dogs a second chance at a loving home. Our team carefully reviews every application and will reach out to help match you with the right dog for your home and lifestyle. You may be seeing our dogs listed in multiple states because we work hard to give as many of our rescue dogs as possible the opportunity to be seen by loving families beyond our local area. While we are based in Los Angeles, we expand our reach throughout the Western United States and the Midwest to help more dogs find the forever homes they deserve. We understand that transportation and adoption fees can sometimes feel like a big commitment, and we truly appreciate every person who considers opening their heart and home to a rescue dog. Our goal is simply to give these dogs the best chance at being seen, adopted, and loved. Ozzie and Friends Rescue coordinates safe and reliable transport so adopted dogs can travel to their new homes across the Western United States, Canada, and the Midwest. We can’t wait to help you meet your next fur-ever best friend.July 19, 2026, 5:32 pm

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Use the search tool below to browse adoptable Rat Terrier puppies and adults Rat Terrier in Boulder, Colorado.

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Rat Terrier shelters & rescues in Boulder, Colorado

There are animal shelters and rescues that focus specifically on finding great homes for Rat Terrier puppies in Boulder, Colorado. Browse these Rat Terrier rescues and shelters below.

Here are a few organizations closest to you:

Rescue

34.8 miles

Paws on the Ground Colorado

Littleton, CO 80163

Pet Types: cats, dogs

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Rescue

35.9 miles

Big Bones Canine Rescue

Windsor, CO 80550

Pet Types: dogs

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Want to learn more about adopting a Rat Terrier puppy or dog?

We've got all the info you need on adopting and caring for a Rat Terrier puppy. Check out the links below for everything you ever wanted to know about Rat Terrier puppies and adults.

Rat Terrier basics

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Where do Rat Terriers come from? How many types of Rat Terriers are there? From the history of the breed to question about average height, weight and size, brush up on these basic facts about the Rat Terrier.

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