Breed guide
The Rat Terrier is an American breed with a compact, muscular build and a keen nose bred for pest control and small-game hunting. Despite their working-dog roots, Rat Terriers are playful, affectionate family dogs who are equally happy cuddling on the sofa or sprinting around the yard.
Breed snapshot
Size
10–18 inches at the shoulder (Mini or Standard)
Weight
10–25 lbs
Lifespan
12–18 years
Energy
High
Grooming
Very low — weekly brushing
Best for
Excellent — versatile family farm dog
Sources: AKC — Rat Terrier Breed Standard · Rat Terrier Club of America
Wondering about apartment life? See our Rat Terrier apartment fit guide →
The Rat Terrier is an all-American breed — developed on American farms in the late 19th and early 20th centuries to be the ultimate small farm hunter, capable of clearing barns of rats and squirrels, retrieving game, and serving as a watchdog and companion. Teddy Roosevelt is said to have named the breed. Today's Rat Terrier is one of the most versatile, healthiest, and longest-lived small dogs you can own — and one of the most underrated.
Quick answers
Rat Terriers are alert, athletic, and intelligent. They form intense bonds with their family, are notably good with children (when raised with them), and are typically calmer and more affectionate at home than the typical working terrier — closer in temperament to a small sporting breed in some ways. They're confident but not pushy, playful without being hyper, and capable of an off switch.
The terrier roots show in prey drive (very high — small furry things are work, not pets), digging instinct, and a bark when something interesting happens. Rat Terriers are sensitive to their owner's mood and respond best to a calm, consistent household. They can be reserved with strangers and benefit from solid early socialization.
Developed in the United States from a blend of English working terriers (Fell, Manchester, Bull, Smooth Fox) plus likely Whippet and Beagle crosses for speed and tracking ability. Used on American farms from the late 1800s through the mid-1900s as multipurpose vermin hunters and family dogs. The breed declined with the industrialization of farming, then was preserved and revived by enthusiasts; AKC formally recognized the Rat Terrier in 2013.
Grooming
Exercise
Diet
Bright, eager, and responsive to positive reinforcement. Rat Terriers learn fast and excel at obedience, tricks, and dog sports. They're sensitive and don't respond well to harsh corrections. Recall takes work — prey drive is high — so build it early with long lines and high-value rewards. Housetraining is generally straightforward with consistent crate work.
One of the healthiest pure breeds — and one of the longest-lived, with many dogs reaching 16, 17, even 18 years. Conditions to know: patellar luxation, hip dysplasia (uncommon), Legg-Calvé-Perthes, primary lens luxation, and allergies in some lines. Routine preventive care and lean body weight cover most of the lifespan equation.
This is editorial information based on breed-club standards and published veterinary research, not medical advice. Talk to your vet about screening recommendations for your individual dog.
Great fit if you’re…
Active families with kids, working farms, hikers, dog sport enthusiasts, first-time terrier owners who want something easier than a JRT. A great breed for people who want a low-maintenance, healthy, devoted small dog.
Maybe not the right breed if…
Households with small pets (rats, rabbits, hamsters not safe), sedentary owners, apartments without serious exercise commitments, or owners who can't tolerate some prey-drive barking at squirrels.
They look similar but they're distinct breeds with different origins. Rat Terriers were developed in America from a wider mix of working breeds and tend to be slightly larger, often with more white markings, and generally a calmer temperament than the typical Jack Russell. Jack Russells were bred for fox-bolting in England and tend to be more intense and prey-driven.
Rat Terriers are one of the longest-lived dog breeds, typically living 12 to 18 years, with many reaching 16 or 17. Lean body weight, regular exercise, and routine preventive care contribute most to longevity.
Yes, moderately for a short-coated breed, especially seasonally. The hair is short and easy to manage with weekly brushing. Rat Terriers are not hypoallergenic.
Yes — Rat Terriers are typically excellent family dogs with children, sturdy enough to handle play and affectionate with their household. They do best with kids who understand respecting a dog's space.
Yes, with adequate daily exercise (60+ minutes outside the apartment) and mental enrichment. Rat Terriers adapt to apartment living more easily than higher-strung terriers, but they will alert-bark at hallway noises.
Health reference
Common health conditions in Rat Terriers
Breed-specific risks across skin, joints, eyes, heart, and dental — plus when to see a vet. Sourced from AKC, AVMA, and OFA.
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Deciding between the Rat Terrier and a similar breed? Side-by-side guides covering temperament, exercise, grooming, and health.
Photo gallery
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