The Complete Rat terrier Guide

Energetic, intelligent, and alert.

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Average Weight
Male 10-25 lbs. Female 10-25 lbs.
Average height
Male 10-18 in. Female 10-18 in.
Life expectancy
12-18 years old

You didn’t land on the Rat terrier by accident. This is a breed people seek out, and for good reason. Quick and resourceful, friendly without being pushy, and athletic and tenacious in a compact body, they’re a natural fit for active owners, families, and anyone who wants an alert, athletic small to medium dog with a genuine working spirit who want a lively, friendly, and surprisingly versatile companion who brings energy and entertainment in a manageable size. Let’s dig in.

What are the characteristics of a Rat terrier?

Think you know what you’re getting into with a Rat terrier? These scores will either confirm your suspicions or give you something to think about. Either way, good to know now.

Training

TraitScoreWhat does it mean?
Trainability4 out of 5Bright and quick. Rat Terriers are intelligent and enjoy learning when training is engaging and rewarding
Obedience4 out of 5More biddable than many terrier breeds. They follow direction well when trained consistently
Focus3 out of 5Generally focused in training, though their terrier nose can redirect attention quickly outdoors
Stubbornness3 out of 5Some stubbornness typical of terrier breeds, manageable with patience and positive reinforcement

Friendliness

TraitScoreWhat does it mean?
Good with family4 out of 5Friendly and affectionate with their family. They bond closely and enjoy being part of household activity
Good with children4 out of 5Playful and gentle with children. Their manageable size reduces the physical hazard
Good with strangers4 out of 5Generally friendly and outgoing with new people. One of the more sociable terrier breeds
Good with other dogs4 out of 5Gets along well with other dogs, especially when socialized early

Adaptability

TraitScoreWhat does it mean?
Apartment living4 out of 5Manageable in apartment living with sufficient exercise
Cold weather3 out of 5Handles cool weather reasonably well for a short-coated breed. A coat helps in genuine cold
Hot weather3 out of 5Tolerates moderate heat
Routine flexibility4 out of 5Adapts well to different routines and environments
First time owner4 out of 5A good option for first-time owners who understand and enjoy terrier temperament

Physical needs

TraitScoreWhat does it mean?
Energy level4 out of 5High energy for their size. Lively and athletic throughout their life
Endurance3 out of 5Good endurance for a small dog. Originally bred to work all day on a farm
Exercise needs3 out of 5Needs 30 to 45 minutes of vigorous daily exercise. Fetch, running, and terrier sports work well
Mental stimulation4 out of 5Quick learners who enjoy mental challenges and pick up tricks easily
Grooming needs1 out of 5Short, smooth coat that requires minimal grooming

Personality

TraitScoreWhat does it mean?
Playfulness5 out of 5One of the more playful terrier breeds. Their enthusiasm and speed make games genuinely entertaining
Affection4 out of 5Affectionate and warm with their people
Loyalty4 out of 5Loyal and closely bonded to their household
Independence3 out of 5More people-oriented than many terriers. Can handle alone time better than companion breeds
Alertness4 out of 5Highly alert and reactive to sounds and movement. This is a working dog brain

Behavior

TraitScoreWhat does it mean?
Barking tendency3 out of 5Can be vocal, particularly when hunting instincts are triggered. Training manages nuisance barking well
Digging tendency4 out of 5Significant digging tendency. This is a dog bred to go underground after quarry
Chewing tendency3 out of 5Moderate chewing tendency
Prey drive5 out of 5Very high prey drive. They were bred to hunt and kill vermin, and that instinct is fully intact
Guarding instincts3 out of 5Alert and vocal. Makes a good alarm dog for their size

What are common health issues of a Rat terrier?

Like all breeds, Rat terriers are prone to certain health conditions. Here’s what to keep on your radar.

What are the recommended health tests for Rat terriers? 

Your Rat terrier can’t tell you when something’s off. That’s what these tests are for. Here’s what vets typically recommend for them.

  • Checkmark OFA patella evaluation
  • Checkmark OFA hip evaluation
  • Checkmark CAER ophthalmologist eye exam
  • Checkmark Cardiac evaluation by a board-certified cardiologist

Do Rat terriers need pet insurance?

We’ll let the numbers do the talking, but spoiler: a lot of Rat terrier owners are really glad they had coverage.

#1
Claimed condition for Rat terriers in 2025 was gastritis.
$223
Average reimbursement for illness claims for Rat terriers in 2025
$542
Average reimbursement for accident claims for Rat terriers in 2025

Those numbers aren’t hypotheticals. They’re real claims from real Rat terrier owners in 2025.

The right pet insurance means you’re making decisions based on what your dog needs, not what you can afford.

With Lemonade, you can build a plan around your Rat Terrier specifically. Start with accident and illness coverage as your base, then add on what makes sense for your dog, things like physical therapy, dental illness, or behavioral treatment, and skip what doesn’t. Coverage applies to conditions that aren’t pre-existing (AKA, a condition that occurs after your policy is active and your waiting periods have passed), and you’ll know exactly what’s included before you commit. No fine print ambushes, no surprises at claim time.

And when you do need to file? You can do it in the app in minutes. No paperwork, no hold music, no waiting around.

Rat terriers are worth protecting with proper coverage. Here’s how to do it right.

How much does pet insurance cost?

The cost of your premium is personal. It depends on your Rat Terriers age, your location, and what you add to your plan. That said, here’s a realistic look at what other Rat terrier owners pay with Lemonade:

AgeAverage monthly premium
1 year old$45-$50
2 years old$45-$50
3 years old$45-$50
4 years old$45-$50
5 years old$50-$55
6 years old$60-$65
7 years old$65-$70

Not sure if Lemonade is the right fit for your Rat Terrier?

See how we stack up. Compare pet insurance options side by side and find the coverage that fits your Rat terrier and your budget.

History of the Rat terrier

The Rat Terrier is an American working terrier developed in the late 1800s and early 1900s from crosses between multiple terrier breeds including the Fox Terrier, Bull Terrier, Manchester Terrier, and Beagle, among others. They were bred specifically as farm dogs capable of hunting and eliminating vermin, and they became one of the most common working dogs on American farms in the early 20th century. President Theodore Roosevelt is often credited with naming the breed, reportedly after his own Rat Terriers cleared the White House of a rat infestation. The breed declined significantly with the rise of pesticides in the mid-20th century but experienced a revival starting in the 1970s and 1980s as both working and companion dogs. The AKC recognized the Rat Terrier in 2013. They come in two size varieties, miniature and standard, and are known for being more people-friendly and biddable than many other terrier breeds.

Caring for a Rat terrier

Training

Training a Rat terrier is straightforward, but it’s worth the effort. They are intelligent, alert, and eager to please, which means they pick up commands quickly and enjoy the mental engagement of training sessions. Positive reinforcement with treats and play in short, energetic sessions tends to work best, and getting started early makes a real difference.

Whether you’re starting from scratch or leveling up, these are worth the read.

Grooming

Rat terriers have a short, smooth coat that requires minimal grooming. Weekly brushing with a soft bristle brush is all the coat needs, and the occasional bath keeps them looking their best. Regular nail trims and ear checks complete this breed's minimal grooming needs.

From nail trims to professional care, here’s everything you need to keep your Rat Terrier looking (and feeling) their best.

Exercise and mental stimulation

Rat terriers have high energy levels and need 45 to 60 minutes of exercise each day to stay happy and healthy. Fetch, digging games, and short agility activities are all great ways to burn through that energy. But physical exercise is only half the picture. Rat terriers are highly intelligent dogs, and mental stimulation is just as important as the miles you put in. Without it, they become hyperactive, mischievous, and prone to destructive digging and escape attempts. Puzzle toys, training sessions, and scent work are all solid ways to keep their brain engaged between walks.

Here’s how to build an exercise routine your Rat terrier will actually love.

Nutrition

Rat terriers are small to medium dogs with high energy, so they need a diet to match. Most adults do well on around 400 to 600 calories a day, spread across two meals. Depending on what you’re feeding them, expect to spend around $25 to $45 a month on food. Not the cheapest line item, but not the most expensive either.

What goes in the bowl is your call, and your vet’s. Kibble, raw, fresh, or a combination: there’s no single right answer. Focus on quality ingredients, the right portions for your dog’s age and activity level, and you’re most of the way there.

Get the full picture on feeding a Rat terrier here.

Rat terrier costs and adoption

What does it cost to bring home a Rat terrier?

Before your Rat terrier even sets a paw in your home, there are some one-time costs worth planning for. Here’s what to expect upfront.

CategoryCost RangeDetails
Adoption (Reputable breeder)$500-$1,500Health testing, vaccinations, early socialization, pedigree
Adoption (Rescue/shelter)$50-$300Basic veterinary care, spay/neuter, temperament evaluation
Initial veterinary care$300-$500Exam, vaccinations, spay/neuter if needed, microchip
Essential supplies$100-$300Crate, bed, leash, collar, food bowls, toys
Training classes$100-$200Basic obedience, puppy socialization
These figures are estimates based on average costs and typical ownership patterns. Your actual costs may vary significantly based on your location, your dog’s individual health, the quality of products and services you choose, and factors outside your control. Think of these numbers as a starting point, not a guarantee.

Unexpected costs have a way of showing up in year one more than any other. A starter emergency fund alongside a solid pet insurance plan is the best way to make sure they don’t catch you off guard.

What does it cost to own a Rat terrier each year?

Once you’re past year one, ownership costs settle into a more predictable rhythm. Here’s what most Rat terrier owners spend annually, though keep in mind these numbers can vary quite a bit depending on where you live, your dog’s individual health needs, and the choices you make along the way.

CategoryAnnual costDetails
Food and treats$300-$600Based on the recommended portion for your Rat terrier
Routine Veterinary Care$500-$1,000Wellness exams, vaccinations, dental care
Professional Grooming$100-$300Every Every 8 to 12 weeks, Short smooth coat needs only occasional professional bathing; at-home brushing handles shedding.
Toys and Supplies$100-$300Replacement items, mental stimulation toys
These figures are estimates based on average costs and typical ownership patterns. Your actual costs may vary significantly based on your location, your dog’s individual health, the quality of products and services you choose, and factors outside your control. Think of these numbers as a starting point, not a guarantee.

What are popular Rat terrier names?

We’ve crunched the numbers, and found the top 10 most popular names for Rat terrier we see at Lemonade.

Top girl names

Luna 20
Penny 13
Coco 13
Bella 11
Daisy 10
Cookie 9
Lucy 9
Ellie 8
Molly 8
Millie 7

Top boy names

Jack 13
Leo 10
Buddy 9
Charlie 9
Jax 8
Rocco 8
Indy 7
Milo 7
Archie 7
Brody 6

More names where those came from. If none of these are clicking, we’ve done the digging for you. Go find the one that sticks.

Rat terrier puppies

Puppy veterinary needs

The first year matters a lot. What happens between 8 weeks and 12 months shapes who this dog becomes. Here’s what to focus on.

The first few months are the most important window for your puppy’s health. Core vaccines start at 6–8 weeks and continue through 16 weeks. After that, its annual boosters and routine screening as they grow into adults.

It’s a lot to keep track of. That’s why we made it easy.

puppy vaccination checklist
puppy vaccination record

Puppy socialization

Rat terrier puppies are quick, friendly, and alert in a way that makes them feel more present than their size suggests. That a working intelligence and friendliness that is less common in terrier breeds is part of what makes them a lively, adaptable companion for active owners who want a small-to-medium dog with real substance, and it’s also why early socialization matters so much.

Between 8 and 16 weeks, get them in front of as much variety as possible. Different people, animals, sounds, surfaces, and locations. Keep every experience positive. Puppy classes are great for this: supervised, controlled, and full of exactly the kind of novelty a Rat terrier brain needs to learn that the world is mostly fine.

Where are Rat terrier’s most popular in the United States?

Based on Lemonade’s own policyholder data, Rat terriers are most popular in these five states. We’ve also thrown in a few things local pet owners should keep an eye on, so your pup can get out there and explore safely.

1. California

Foxtail grass is one of the sneakiest hazards for California dogs. The barbed seeds can embed in paws, ears, and noses from late spring through early fall, so check your dog after any outdoor time. Wildfire smoke is also a real seasonal concern; when air quality alerts are in effect, it's best to keep walks short and stay indoors as much as possible.

2. Texas

Texas heat is intense and sets in early. Hot pavement can burn paws from late spring through early fall, and heatstroke risk is high during midday walks in cities like Houston, Dallas, and San Antonio. Rattlesnakes, scorpions, and fire ants are also common hazards, particularly in suburban and rural areas.

3. Florida

Florida's heat and humidity make heatstroke a real risk, especially in summer. Keep walks to cooler parts of the day and always bring water. Blue-green algae blooms in freshwater lakes and ponds can also be toxic to dogs, so it's best to keep pups out of standing or slow-moving water, particularly from late summer into fall.

4. New York

In New York City, street hazards are the main thing to watch. Dropped food, discarded gum containing xylitol, and litter are common ingestion risks on sidewalks and in parks. Upstate and in Long Island, the story shifts to ticks: New York is a Lyme disease hotspot, and black-legged ticks are active from early spring through late fall.

5. Washington

Western Washington's wet, mild climate creates near-perfect conditions for fleas year-round, and slugs in the Pacific Northwest can carry lungworm, a parasite dogs can pick up by sniffing or eating them. Eastern Washington and the Cascades bring different risks, including rattlesnakes and wildlife encounters on trails, so knowing which side of the mountains you're on matters.

Breed comparison

Already leaning toward a Rat terrier? These breeds often get compared, here’s a quick snapshot of how they stack up.

Jack Russell Terrier

Both are small, energetic working terriers. Jack Russells are more intense and athletic. Rat Terriers are calmer, easier to train, and slightly better suited to family life overall.

Read more

Miniature Pinscher

Both are small, alert, and energetic. Min Pins are more intense and harder to manage. Rat Terriers are calmer, more trainable, and slightly better suited to first-time owners.

Read more
Wire Haired Fox Terrier

Wire Haired Fox Terrier

Both are bold, energetic terriers. Wire Haired Fox Terriers are more refined and slightly larger. Rat Terriers are calmer, more trainable, and better suited to family life overall.

Read more

Border Terrier

Both are small, energetic working terriers. Border Terriers are slightly calmer and more adaptable. Rat Terriers are more alert, more athletic, and better suited to active owners.

Read more

Chihuahua

Both are small, bold, and alert. Chihuahuas form more intense bonds with one person. Rat Terriers are more athletic, more trainable, and better suited to active family households.

Read more

Is a Rat terrier right for you?

Rat terriers reward the right owner with a quick, engaging energy that makes active outdoor time genuinely entertaining and a friendly, adaptable nature that fits comfortably into family life. They just need high-value recall training, secure fencing, daily vigorous exercise, and consistent dental care in return. If you’re ready for that, you’re ready for a Rat terrier. Make sure they’re protected from day one.

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A few quick words, because we <3 our lawyers: This post is general in nature, and any statement in it doesn’t alter the terms, conditions, exclusions, or limitations of the policies issued, which differ according to your state of residence. You’re encouraged to discuss your specific circumstances with your own professional advisors. The purpose of this post is merely to provide you with info and insights you can use to make such discussions more productive! Naturally, all comments by, or references to, third parties represent their own views, and Lemonade assumes no responsibility for them. Coverage may not be available in all states. Please note that statements about coverages, policy management, claims processes, Giveback, and customer support apply to policies underwritten by Lemonade Insurance Company or Metromile Insurance Company, a Lemonade company, sold by Lemonade Insurance Agency, LLC. The statements do not apply to policies underwritten by other carriers.

Insurance claim data is based on Lemonade pet insurance claims that were settled and paid in 2025.
Average insurance premium data is based on Lemonade’s internal data and reflects the average premium over the last 12 complete months, accurate as of June 2026.
Top pet names are sourced from Lemonade’s database of pet names associated with submitted quotes and purchased policies.
Top states for each breed are based on the number of active Lemonade pet insurance policies for that breed in each state as of June 2026.

Please note: Lemonade articles and other editorial content are meant for educational purposes only, and should not be relied upon instead of professional legal, insurance or financial advice. The content of these educational articles does not alter the terms, conditions, exclusions, or limitations of policies issued by Lemonade, which differ according to your state of residence. While we regularly review previously published content to ensure it is accurate and up-to-date, there may be instances in which legal conditions or policy details have changed since publication. Any hypothetical examples used in Lemonade editorial content are purely expositional. Hypothetical examples do not alter or bind Lemonade to any application of your insurance policy to the particular facts and circumstances of any actual claim.