Rat Terrier

Updated December 13, 2024

Updated December 13, 2024

Energetic and playful, Rat Terriers want to be your bestie. These fast learners thrive in busy, active households with pet parents who can provide early socialization, daily training and lots of playtime. But don't worry, when it comes to their grooming needs, they're low-maintenance.

Temperament

Energetic, Affectionate, Playful

Weight

Male: 10-25 pounds

Female: 10-25 pounds

Height

Miniature: 10-13 inches

Standard: 13-18 inches

Life Expectancy

12 to 18 years

Coat Color

Black and White, Black White and Tan, Black Tan and White, Blue White and Tan, Red White and Sable, White and Apricot, White and Black, White Black and Tan, White and Blue Fawn, White and Blue, White and Chocolate, White Chocolate and Tan, White and Fawn, White and Lemon, White and Red, White and Silver, White and Tan, White

Looking for a truly loyal BFF? Rat Terriers live up to the term “man’s best friend”—their temperament is as devoted as their ears are perky. (Spoiler: That’s a lot.) They’ll go where you go; they’ll love who you love (mostly). You’ll have to forgive them for having a bit of a stubborn streak—they may be too smart for their own good, but they are likely to make up for it by being a fast learner in training or winning you a ribbon in an agility show. If you commit to teaching them your rules, you’ll have an energetic, playful bestie to fall in love with in no time.

Rat Terrier Characteristics

Remember: Dogs are individuals and not all dogs, even those of the same breed, will exhibit all the same qualities.

    Rat Terrier Appearance

    Rat Terriers have expressive, alert faces that reflect their zest for life. They’re built like a doggie gymnast, muscular and ready to work; and they come in two sizes: Miniature (10-13 inches) and Standard (13-18 inches). They have a wide combination of colors in a pied pattern (large colored patches mingled with white). Their perky ears are always alert and listening for the next source of excitement.

    Photo of a Rat Terrier
    1. Ears

      The Rat Terrier's ears can stand straight up or be semi-erect with the tips pointed upwards or flopping down (which is known as button ears).

    2. Eyes

      Their eyes are oval-shaped and set wide apart. The color ranges from dark brown to hazel, and sometimes gray, usually corresponding with the color of their coat.

    3. Nose

      As with the Rat Terrier's eyes, the nose color varies depending on the color of their coat.

    4. Coat Length

      Rat Terrier coats are smooth and shiny with short hair, and can be slightly wavy down their backs.

    5. Coat Color

      Their coat comes in a wide range of colors, including black and white or tri-color (black, tan and white; red, white and sable; blue, white and tan; or white, chocolate and tan) and can be any pied pattern, meaning there are large patches of one or more shades, along with a combination of white with apricot, fawn, lemon, red, silver, blue or chocolate. They can also have colored speckles mixed through it.

    6. Tail

      The AKC breed standard allows for the tail to be docked. They can also have a bobtail (naturally short) or long and graduating to a point at the tip. Docking involves cutting a portion of the dog’s tail off when they are puppies. Veterinary groups along with many US states and countries have banned this procedure due to medical and behavioral reasons. If you are interested in this procedure, schedule a consultation with your veterinarian.

    Rat Terrier Temperament

    Rat Terriers are a big personality in a compact body. Inquisitive and highly intelligent, these qualities work in their favor when it comes to puzzles and games that will provide seemingly endless entertainment.

    When they’re given a job to do, however, things get serious. They give 100 percent whether they’re hunting vermin, running agility or having a training session. Because Rat Terrier dogs were bred to both function as a working dog and live with a family, they can master both equally.

    These small-sized dogs are usually very friendly and tend to get along with kids and other dogs, but it’s important to remember that all dogs are individuals so this can differ from Rattie to Rattie. As long as your dog is properly socialized (aka introduced to different people and environments) from a young age, they’ll be a great companion for all the family, and a friend to anyone they meet. It’s also important to teach kids how to interact with dogs.

    As their name implies, these dogs kind of have a thing for vermin. So you may want to rethink a Rat Terrier if you keep house with rats, mice, hamsters or birds unless you take precautions to keep them separated. The same goes for cats, but with early and deliberate introductions as Rat Terrier puppies, the two can definitely thrive together.

    Rat Terriers are good watchdogs, so don’t be surprised if they bark when someone comes to the door. If you feel that it’s excessive, there are options to help you reduce your dog’s barking.

    Overall, Rat Terriers are devoted to their people and they love to be included, so don’t leave them alone for too long or they will pine for you. Don’t forget that they still operate on instinct—no matter their training, your Rattie might still make the occasional, sudden lunge for a squirrel on your afternoon walk. They’re just doing what they were bred to do!

    How to Care for a Rat Terrier

    Rat Terriers are pretty low maintenance when it comes to their grooming needs, but when it comes to training, they need daily exercise and a pet parent who is as determined and dedicated as they are. They’re affectionate and love family life, and they are adaptable enough to be anything from apartment-dwellers to farm hands.

    Grooming

    Training

    Diet

    Exercise

    Environment

    Rat Terrier Health

    Rat Terriers have a decent life expectancy and can live 12-18 years. They tend to be a very healthy and active breed, but, like all dogs, they are prone to certain health problems. It’s good to know ahead of time what these concerns could be so you can look out for any tell-tale signs. 

    • Hip Dysplasia: This often-genetic condition can occur when the hip joints are loose, causing pain, cartilage loss and scar tissue if not addressed. Treatment options include weight management, physical therapy or surgery. 
    • Patellar Luxation: This causes the kneecap to dislocate, resulting in pain and loss of function. It can be genetic and treatment option include joint supplements, pain medication and, in severe cases, surgery.  
    • Legg-Calve-Perthes Disease: The hip joint is formed from the ball and socket. In Legg-Calve-Perthes disease, the ball, or top of the femur bone, starts to deteriorate, which can be very painful. Surgery is often the treatment of choice.  
    • Heart Disease: Heart problems can be common when raising a Rat Terrier into their senior years. Your veterinarian will want to monitor their heart for any concerns so that if there’s an issue with their heart or the heart valves that pump blood, these can be addressed. If your vet hears a heart murmur, they will likely refer you to a veterinary cardiologist for an echocardiogram (ultrasound of the heart) to determine the underlying cause.  
    • Eye Disease: Rat Terriers are prone to a certain disease called primary lens luxation that can lead to teary, red and/or cloudy looking eyes. Eventually, dogs can go blind. If you notice any of these signs or have concerns about your pet’s eyes or vision, please contact your vet immediately. 

    Rat Terrier History

    Rat Terriers earned their name through history by being experts at catching rats. They originated on American farms, where these little dogs were perfect for exterminating the vermin that could potentially wreak havoc on stored food needed for survival. In fact, they were specifically bred for this very task and in the 1910s and 1920s, they were the most common farm dog in the US.

    The Rat Terrier dog breed comes from a mix of several different breed types, including the Smooth Fox Terrier, Manchester Terrier, Whippet, Italian Greyhound and Beagle. Farmers used different combinations of breeds to land on the traits they required for the job. For instance, Whippets and Italian Greyhounds were included for their speed and the Beagle for their superior hunting skills. An American original, it’s said Teddy Roosevelt is responsible for naming this breed.

    As farmers started killing rats with poison, Rat Terriers became less popular until the 1990s when they started making a comeback. The Rattie was officially recognized by the American Kennel Club (AKC) in 2006.

    Want a Rat Terrier? You can find a list of reputable Rat Terrier breeders on the AKC’s website. What’s the average cost of a Rat Terrier puppy? Depending on the breeder, expect to spend $500-$1,100 for a Rattie pup. Puppies bred through a reputable breeder will have their puppies screened for any concerns medically and behaviorally and may come with pedigree papers. You can also reach out to Rat Terrier rescue organizations to adopt a Rattie, keep an eye out for them at your local animal shelter, or search Chewy’s database of adoptable dogs in your area.

    FAQs

    Do Rat Terriers shed?

    Do Rat Terriers bark a lot?

    Are Rat Terriers good family dogs?

    Can Rat Terriers swim?

    What are the most common Rat Terrier mixes?


    Expert input provided by Dr. Antje Joslin, veterinarian for Dogtopia; certified dog trainer and behavior consultant Julie Parker, CTC, CPDT-KA owner of Rocky Mountain Dog Training; and AKC/UKC Judge Tracey A. Kallas, RTCA, Judges Education Coordinator and Vice President, Breeder of Merit at K2 Rat Terriers.

    Breed characteristic ratings provided by Dr. Sarah J. Wooten, DVM, CVJ, a veterinarian at Sheep Draw Veterinary Hospital in Greeley, Colorado; dog trainer and behavior consultant Irith Bloom, CPDT-KSA, CBCC-KA, CDBC, owner of The Sophisticated Dog, LLC, in Los Angeles; and certified animal behavior consultant Amy Shojai, CABC, in Sherman, Texas.

    The health content was medically reviewed by Chewy vets.