The Academy

The Academy

Farm Terrier · Terriers

Rat Terrier

Also known as: Rat Terrier, RT

A compact, athletic American farm terrier — bold, energetic and intelligent, with high prey drive, an unusually sociable-for-a-terrier temperament and a strong-willed nature that suits active homes.

10 min read Last reviewed: July 2026

Want The Academy to remember your breed research? Learn About Membership

Quick Facts

Best Suited For

Active homes providing outlets

Exercise

High

Grooming

Low

Shedding

Moderate

Trainability

Trainable; biddable for a terrier

Experience Level

Good for prepared first-time owners

At a Glance

At a Glance

Size category
Medium
Original purpose
Vermin control and farm work
Country / region of origin
United States
Height range
25–46 cm (10–18 in) — mini and standard
Weight range
4–11 kg (10–25 lb) — mini and standard
Life expectancy
12–18 years
Coat type
Short, smooth, dense coat
Recognized colours
White with black, tan, chocolate, blue or apricot patches
Exercise commitment
High
Mental-work commitment
High
Training commitment
Moderate to high
Grooming commitment
Low maintenance
Shedding tendency
Moderate
Vocal tendency
Moderate to high
Prey-drive tendency
High
Protective tendency
Low
Sociability considerations
High (for a terrier)
Best suited to
Active homes who provide outlets

Ranges and tendencies vary by sex, line, registry, and individual dog. Descriptive labels are used instead of scores or rankings.

Original Purpose

Original Purpose

Vermin control and farm work in the United States

What People Often Love

What People Often Love

  • Compact, athletic and balanced build
  • Bold, energetic and intelligent temperament
  • Unusually sociable for a terrier
  • Low-maintenance short smooth coat
  • Very long-lived for a terrier
  • Versatile across companion and farm roles

What Can Be Difficult

What Can Be Difficult

  • High prey drive, boldness and independence requiring consistent handling
  • Strong-willed terrier temperament
  • Digging and chasing tendency
  • Vocal alerting and barking
  • Very high energy — not a low-energy companion
  • Dog-sociability considerations — some individuals are dog-selective

Life Stages

Life stages

Puppy

Puppies are bold and very energetic; early socialization and manners matter. Teach impulse control early.

Adolescent

Adolescence sharpens prey drive and energy. Structure, outlets and consistent handling are essential.

Adult

Adults are bold and sociable with outlets. Daily exercise, training and health screening continue for life.

Senior

Mobility, eye and neurological care matter. Keep gentle activity and mental engagement.

Colours and Coat

Colours and coat

Recognized colours
White with black, tan, chocolate, blue or apricot patches
Coat length
Short
Coat texture
Smooth, dense coat
Undercoat
Minimal
Seasonal changes
Moderate shedding
Grooming notes
Low maintenance — occasional brushing; regular nail, ear and dental care.

Colour does not indicate temperament.

Male vs Female

Male vs Female

FieldMaleFemale
height25–46 cm25–46 cm
weight4–11 kg4–11 kg
buildSlightly more substantialSlightly lighter
maturitySimilarSimilar
Visible sexual dimorphismMildMild

Temperament differences between individual dogs are generally more important than sex alone.

Appearance Variation

How Rat Terrier can vary in appearance

Rat Terrier does not have a single widely recognized working-vs-show line division, but appearance still varies by individual. Verified breed-typical details:

  • Coat: Short, smooth, dense coat.
  • Recognized colours: White with black, tan, chocolate, blue or apricot patches.
  • Typical height: 25–46 cm (10–18 in) — mini and standard.
  • Typical weight: 4–11 kg (10–25 lb) — mini and standard.

Individual dogs vary by sex, line, registry and development. None of these variations indicate better health, value or quality.

Original Purpose

The Rat Terrier was developed in the United States from a mix of Fox Terriers, Manchester Terriers, Whippets, Beagles and other farm breeds as a versatile farm terrier for vermin control, ratting and general farm work. Selected for boldness, drive, athletic ability, a short smooth coat and an energetic, intelligent temperament, the breed worked above ground on farms. Those instincts — high prey drive, boldness, independence and a strong-willed terrier temperament — remain central to the breed today. The breed comes in mini and standard sizes.

The Reality of Living With This Breed

The Rat Terrier's compact, charming appearance hides a bold, high-prey-drive farm terrier with very high energy. Consistent training, structured socialization and managed outlets are essential. The breed is unusually sociable for a terrier, which many find rewarding, but prey drive and energy are real. Breeding and early development matter; individuals vary.

History and Development

Rat Terriers were developed in the United States from a mix of Fox Terriers, Manchester Terriers, Whippets, Beagles and other farm breeds for vermin control, ratting and general farm work. The name reflects the breed's ratting role on American farms. The breed comes in mini and standard sizes. Selection for boldness, drive, athletic ability, a short coat and a sociable temperament shaped the modern dog.

Temperament

Typical Rat Terriers are bold, energetic, intelligent and unusually sociable for a terrier. They bond with family and tend to be good with people and other dogs. Prey drive and boldness are high. The breed is strong-willed but responsive. Breed tendencies describe patterns, not guarantees.

Exercise Needs

Most need very high exercise — daily physical outlets plus intense mental engagement. A tired, engaged dog is calmer than an under-stimulated one. Small size does not mean low exercise needs.

Mental Work and Enrichment

Scent work, problem-solving, retrieve, lure coursing and structured engagement are valued outlets. Purposeful, varied tasks satisfy more than repetition.

Training Approach

Rat Terriers are intelligent and relatively biddable for a terrier; clear, fair, consistent, reward-based methods work best. Recall and impulse control are core themes. Harsh handling damages trust. The breed's sociability makes training relatively rewarding. Professional guidance is valuable for first-time terrier owners.

Children, Dogs and Other Animals

They can live well with children and other pets when raised with them and managed carefully. The breed is generally more sociable with other dogs than many terriers. Prey drive requires supervision around small animals. No breed should be left unsupervised with young children.

Prey Drive, Digging and Movement Sensitivity

High prey drive and digging are defining. The breed may chase small fleeing animals and dig. Secure containment and managed expectations are essential. This is the heritage that shaped the breed, not a flaw.

Noise and Vocal Behaviour

Alert barking is common. Management includes teaching quiet and meeting the dog's needs. Close-neighbour housing is a consideration.

Grooming and Coat Care

The short smooth dense coat is low maintenance — occasional brushing and regular nail, ear and dental care. This is one of the easier terrier coats to maintain.

Health Considerations

Commonly discussed health concerns include certain orthopedic conditions (patellar luxation, hip dysplasia), certain eye conditions (progressive retinal atrophy, cataracts, lens luxation), certain dental conditions (crowding), certain cardiac conditions, and certain neurological conditions (degenerative myelopathy). Responsible breeding with health screening is important. This information is educational, not diagnostic. Always consult a qualified veterinarian.

Housing and Lifestyle Fit

Rat Terriers suit active homes with secure space and owners prepared for consistent training and very high outlets. Close-neighbour housing is a consideration due to vocalizing. The compact size suits many homes, but the energy is significant.

Common Owner–Breed Mismatches

  • Choosing the breed for its compact size without accounting for very high energy
  • Expecting a low-energy small companion
  • Underestimating prey drive, digging and vocalizing
  • Assuming the sociable temperament means low terrier drive

Who This Breed May Suit

Rat Terriers may suit active homes prepared for very high outlets and consistent training. The breed's bold, sociable, intelligent nature makes it one of the more rewarding terriers for the right household.

Who This Breed May Not Be For

Rat Terriers may not suit first-time or casual homes unprepared for very high energy, or anyone wanting a low-drive companion. The breed's prey drive, digging, vocalizing and energy require honest assessment. This does not make the breed bad — it may simply mean the breed's needs and the household's real life are not compatible.

Choosing a Breeder

  • What health testing has been done on the parent dogs?
  • What is the temperament of the parent dogs?
  • What lines are the parents from, and what traits were selected for?
  • How are puppies socialized and raised?
  • How are puppies matched to homes?
  • What support is provided after placement?
  • What is the return policy if the placement does not work?
  • Why was this specific breeding planned?

Choosing a Rescue or Adult Dog

  • What is known about the dog's history?
  • What has the foster home observed about behaviour?
  • How does the dog behave around dogs, cats, and children?
  • What medical information is available?
  • Is behaviour support available during adjustment?
  • What is the trial or return policy?
  • What adjustment period should be expected?

Before You Bring One Home

Before you bring one home

Use these questions as a reality check before choosing this breed. There are no perfect answers, but honest answers can help you decide whether the breed's needs, tendencies and long-term responsibilities fit your life.

  • Am I prepared for very high energy in a compact frame, not a low-energy companion?
  • Can I manage prey drive, digging and vocalizing?
  • Do I have secure fencing for a digging, chasing terrier?
  • Have I asked breeders about patella, hip, eye, dental, heart and DM health screening?

Similar Breeds

Similar breeds to explore

Jack Russell Terrier

Related farm/earthdog terrier heritage; similar energy and drive.

Smooth Fox Terrier

Related smooth-coated terrier heritage; similar build.

Manchester Terrier

Related heritage — the Rat Terrier descends partly from Manchester Terriers.

Frequently Asked Questions

Rat Terrier — common questions

Sources and Review

Sources and review status

Last reviewed: July 2026

Academy editorial review: Approved

Gallery now correctly identifies the existing Rat Terrier hero source as a five-week-old puppy rather than an adult. Adult and additional appearance subsections remain intentionally empty until separately verified reusable sources are added.

Report a correction or concern for this guide.

American Kennel Club (AKC) — Rat Terrier Club of America parent-club designation

breed club

verified

American Kennel Club (AKC) — Rat Terrier

kennel club

verified

American Kennel Club — Terrier Group Health Testing Requirements

health

verified

Sources are being verified. No citation is presented as confirmed until review is complete. Always consult qualified professionals for breed-specific and health advice.

Last reviewed: July 2026

Reviewed by: The Academy Editorial Team

This guide describes common breed traits, historical purpose and practical ownership considerations. Individual dogs vary according to genetics, health, early development, environment, training and life experience.

Report an issue with this guide