Rat Terrier
American farm dog. Hardy, friendly, astonishingly long-lived. One of the healthiest breeds with the fewest hereditary problems.

Coat
short
Size
small · 10-25 lbs
Life expectancy
12-18 yrs
Activity
high
The breed
Where the Rat Terrier comes from, and what living with one actually asks of you.
About the Rat Terrier
The Rat Terrier is an American farm terrier developed for vermin control, all-purpose farm work, and practical companionship. It is small to medium, quick, alert, and tougher than its size suggests. The breed often appeals to people who want a lively, washable, trainable terrier without a heavy grooming burden.
Living with a Rat Terrier is usually busy and interactive. Many are affectionate, funny, athletic, and people-oriented, but they still have terrier prey drive and opinions. They can fit many homes if they get walks, play, training, digging or chasing outlets, and clear rules. A bored Rat Terrier may bark, chase, dig, or hunt household pests on its own schedule.
Health planning should be specific without exaggerating. Local data flags patellar luxation, hip dysplasia, Legg-Calve-Perthes disease, cardiac disease, allergies, and dental disease. The national club and veterinary sources discuss testing for hips, patellas, cardiac disease, Legg-Calve-Perthes, and related small-terrier concerns. Skin allergy can occur, but chronic itch should be worked up broadly rather than assumed to be food-driven.
Living with a Rat Terrier
Rat Terriers are usually alert, cheerful, energetic, and affectionate. They can be good with children who respect boundaries and often enjoy other dogs, though prey drive around rodents, poultry, cats, and wildlife needs caution.
Training should be positive and fast-moving, with attention to recall, leash manners, quiet cues, and impulse control. They are clever enough to learn household patterns quickly, including ones owners did not intend to teach.
Daily care
Feeding, exercise, and coat — plus how the routine shifts from puppy to senior.
Feeding a Rat Terrier
American farm terrier. Calorie needs vary with size variety, age, neuter status, and activity. Remarkably healthy and long-lived breed.
Key nutrients
- —dental support
- —high-quality protein
Portion notes: Two meals daily. Adjust for size (wide range in this breed).
Exercise & enrichment
Rat Terriers need daily walks, play, and problem-solving. Their needs vary by size and drive, so feed to body condition, age, neuter status, and activity rather than a fixed calorie number.
Grooming routine
The short coat needs weekly brushing or wiping, plus nail trims, dental care, and ear checks. Small active terriers can wear nails unevenly and crack teeth on hard chews, so inspect feet and mouth routinely. Watch knees, hips, and skin if limping, skipping, or itching appears.
The Rat Terrier through the years
Rat Terrier puppies need socialization, recall games, safe prey-drive outlets, dental handling, and early rules around barking, digging, and chasing.
Adult Rat Terriers need regular exercise, measured meals, dental care, and monitoring for knee skipping, hip pain, itching, heart murmurs, or lameness.
Senior Rat Terriers benefit from dental planning, arthritis support, lower-impact games, weight control, and prompt evaluation of cough, limping, appetite shifts, or behavior changes.
Health
What Rat Terriers are prone to, the signs worth catching early, and what supports them.
Health concerns to watch
One of the longest-lived breeds (up to 18 years) with proper care.
Versatile size range (Miniature vs Standard).
Farm-bred prey drive means secure fencing is essential.
Generally very healthy with few breed-specific issues.
Is your Rat Terrier scratching?
Rat Terriers are prone to skin and allergy issues. Take our 2-minute itch triage quiz.
Supplements for Rat Terriers
Matched to this breed's common health concerns. All NASC-sealed.
Cosequin (Nutramax)
The #1 vet-recommended joint supplement
- —#1 vet-recommended
- —NASC Quality Seal
- —Glucosamine + chondroitin
- —Clinically studied
Zesty Paws Allergy & Immune
Seasonal allergy + immune support chews
- —NASC Quality Seal
- —Seasonal allergy support
- —Salmon oil for skin
- —Chewable, dogs love them
Supplements support — they don't treat or cure disease. Talk to your vet for anything clinical.
Gear & services
Food, gear, training, and what the first year with a Rat Terrier actually costs.
Fresh food picks for Rat Terriers
Our recommended fresh-food subscriptions for small dogs.
The Farmer's Dog
Fresh, human-grade food portioned for your dog
- —Human-grade fresh food
- —Portioned per dog
- —Vet-developed recipes
- —50% off first box
Ollie
Fresh food with both cooked and baked recipes
- —Fresh and baked recipes
- —Turkey, beef, lamb, chicken proteins
- —Custom portions
- —60% off first box
Nom Nom
Restaurant-quality fresh food with microbiome testing
- —Pre-portioned pouches
- —Vet-formulated
- —Microbiome testing available
- —50% off first order
Spot & Tango
Fresh or UnKibble — whole-food nutrition, your choice
- —Fresh or UnKibble options
- —Human-grade ingredients
- —Shelf-stable storage option
- —50% off first order
What to budget for a Rat Terrier in year one.
A practical range for routine care and first-year setup. It assumes a dry or mixed diet and mostly at-home care; purchase and adoption fees are excluded.
Practical first-year range
$1,175-$3,325
A typical ongoing year runs $975-$2,025before optional services and unexpected medical care.
Food (year one)
Dry or mixed diet; fresh food can cost more
$450-$950
Gear & supplies (year one)
Crate, bed, harness, bowls, toys
$175-$400
Routine vet + preventatives
Wellness, vaccines, flea/tick and heartworm; no emergencies
$425-$725
Grooming
low needs; DIY to periodic professional help
$25-$150
Training
At-home work to group classes
$0-$600
Optional supplements
Not included in the headline totals
$0-$720
Other first-year
Microchip, license, spay/neuter if needed
$100-$500
Optional pet insurance
Not included above; premiums vary by age, ZIP and coverage.
$500-$1,150/yr
Also not included: fresh-food-only diets, boarding or day care, emergencies, and condition-specific treatment. Breed health risks are planning flags—not guaranteed annual bills.
Size-adjusted U.S. planning ranges, updated July 2026 and benchmarked against Rover's 2026 cost report and Synchrony's 2025 study. Actual costs vary by region and lifestyle.
Gear for Rat Terriers
Breed-size-appropriate picks. Links go to Amazon.
Training for Rat Terriers
Matched to Rat Terrier temperament (friendly, lovable, inquisitive).
BAXTER & Bella
Online puppy training program, lifetime access
- —Lifetime membership
- —Self-paced video lessons
- —Puppy + adult content
- —Behavior troubleshooting
GoodPup
1-on-1 virtual dog training with certified trainers
- —1-on-1 live video sessions
- —Certified trainers
- —Custom per-dog plan
- —Weekly structure
Dogo
App-based training with daily structure
- —App-based daily plans
- —AI-guided feedback
- —Affordable monthly cost
- —Trick training library
GPS trackers for Rat Terriers
Size-appropriate picks for tracking, activity monitoring, and escape alerts.
Fi
Smart collar with GPS + activity tracking
- —Real-time GPS
- —Activity + sleep tracking
- —Escape alerts
- —3-month battery
Tractive
Affordable GPS tracker with unlimited range
- —Attaches to any collar
- —Worldwide GPS coverage
- —Activity monitoring
- —Budget-friendly
Curious about their DNA?
Confirm breed mix, check for genetic health risks, and get actionable insights.
Embark
The most comprehensive dog DNA test
- —350+ breeds identified
- —250+ health conditions screened
- —Cornell-partnered science
- —Relatives finder
Wisdom Panel
Breed identification + health screening
- —350+ breeds
- —Genetic health insights
- —Budget-friendly option
- —Fast results
More on the Rat Terrier
Similar-size breeds
Rat Terrier questions, answered.
Are Rat Terriers good apartment dogs?+
Do Rat Terriers have high prey drive?+
What is Legg-Calve-Perthes disease?+
Are Rat Terriers allergy-prone?+
What health testing should I ask about?+
How long do Rat Terriers live?+
How big do Rat Terriers get?+
How much exercise does a Rat Terrier need?+
What health problems do Rat Terriers commonly have?+
Are Rat Terriers hard to groom?+
What should I feed a Rat Terrier?+
Are Rat Terriers good for first-time owners?+
Ask Searchbreed about your Rat Terrier
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