Toy Fox Terrier vs Rat Terrier: Which Small American Terrier Costs Less to Keep?

The Toy Fox Terrier costs about $187 a year less than the Rat Terrier but $44 more in year one, so a buyer comparing the two should look past the monthly food bill. In PetBudget's breed model the Toy Fox runs $1,483 a year and the Rat Terrier $1,670. The Toy Fox is cheaper to feed. The Rat Terrier is cheaper to buy.

This guide compares the two on size, health, lifespan and a year-by-year cost line, so you can pick the one that fits your budget and your home. The full numbers for each breed sit on the Toy Fox Terrier page and the Rat Terrier page.

Photo: Gilberto Reyes / Pexels. A short-coated terrier shown as a similar type; the source does not name the breed.

What is the short answer on toy fox terrier vs rat terrier?

On toy fox terrier vs rat terrier, the Toy Fox wins on food, supplies and size, and the Rat Terrier wins on year-one price and modeled lifespan. Neither wins on health, because both carry the same three small-dog risks. If your only question is the monthly bill, the Toy Fox saves about $16 a month.

Most buyers should decide on size and energy first. A 6-pound dog and a 20-pound dog live differently, and the cost difference is small enough that it should not settle the choice.

Are the Toy Fox Terrier and Rat Terrier the same breed?

They are two separate American terrier breeds that share a job, catching rodents on farms, and a short, smooth coat. Wikipedia's Toy Fox Terrier entry says the breed began in the United States in the early 1900s as both a farm dog and a household pet. It lists past crosses with the Toy Manchester Terrier, Chihuahua and Italian Greyhound.

The registries recognized the Toy Fox early. The United Kennel Club (UKC) recognized it in 1936 and placed it in the Terrier Group, and the American Kennel Club (AKC) recognized it in 2003 in the Toy Group. The AKC's own Toy Fox Terrier breed page calls it "truly a toy and a terrier."

The Rat Terrier is the larger of the two and comes in more than one size. Our rat terrier sizes guide covers the miniature, standard and Decker labels. This comparison uses the whole 10 to 25 pound range.

How do the two breeds compare on size and coat?

The Toy Fox Terrier is about half the weight of the Rat Terrier, and both have short coats that need almost no grooming. The table uses PetBudget's breed data.

Trait	Toy Fox Terrier	Rat Terrier
Weight	4 to 9 pounds	10 to 25 pounds
Height	8.5 to 11.5 inches	10 to 18 inches
Size class in the model	Toy	Small
Coat	Short, fine, glossy	Short
Grooming rating (1 to 5)	1	1
Shedding rating (1 to 5)	3	3
Exercise in the model	40 minutes a day	60 minutes a day
Typical lifespan in the model	13 years	16 years

Wikipedia lists Toy Fox colors as tri-color, chocolate, white and tan, and white and black, and it notes the UKC does not allow chocolate dogs to be shown. Color has no effect on what the dog costs to keep.

The exercise gap matters more than it looks. The Rat Terrier needs about 20 more minutes a day in the model, and a dog that is under-exercised chews and barks. A Toy Fox Terrier is easier to tire out in a small apartment.

What does each breed cost per year?

The Toy Fox Terrier costs $1,483 a year and the Rat Terrier $1,670, and food is the biggest line in the gap. Insurance and vet care are close because PetBudget scales both from the same U.S. averages.

Annual line	Toy Fox Terrier	Rat Terrier	Difference
Food	$126	$266	$140
Vet care	$561	$577	$16
Grooming	$78	$78	$0
Insurance	$599	$620	$21
Supplies and toys	$119	$129	$10
Total per year	$1,483	$1,670	$187

Insurance is the largest line for both dogs, and it is scaled down from the $836 national average that NAPHIA's State of the Industry highlights reports for an accident-and-illness dog plan. Small dogs land near $600 in the model.

Why is the Toy Fox Terrier more expensive in year one?

The Toy Fox costs $3,789 in year one against $3,745 for the Rat Terrier because its modeled puppy price is $300 higher. Both purchase prices are modeled estimates, not quoted prices, and they come from size-tier defaults.

First-year line	Toy Fox Terrier	Rat Terrier
Purchase or adoption (modeled)	$1,200	$900
Initial vet visit and vaccinations	$561	$607
Starter supplies	$404	$437
Training classes	$260	$260
Food, vet care, grooming and insurance	$1,364	$1,541
Total	$3,789	$3,745

The Toy Fox gets cheaper from year two onward. It is $44 behind at the end of year one, then gains $187 each year, so it is ahead by $143 after year two. Real puppy prices depend on the breeder and the region, so replace the modeled price with a quote before you do this math.

What is the cost over 5, 10 and 16 years?

The Rat Terrier costs more in total only because the model gives it a longer life. The line below adds year one to each later year, using the model's lifespans of 13 and 16 years.

Time frame	Toy Fox Terrier	Rat Terrier
End of year 2	$5,272	$5,415
End of year 5	$9,721	$10,425
End of year 10	$17,136	$18,775
End of year 13	$21,585	$23,785
End of year 16	not modeled	$28,795

PetBudget's lifetime totals are $21,585 for the Toy Fox over 13 years and $28,795 for the Rat Terrier over 16. The $7,210 gap is mostly the three extra years. At the same 13-year mark the Rat Terrier has cost $23,785, which is $2,200 more than the Toy Fox, and that is the fairer way to compare them.

The lifespan figures need a caution. A 2024 UK study cited by Wikipedia found a Toy Fox Terrier life expectancy of 12.9 years, based on only 52 deaths, which supports the model's 13 years. The Rat Terrier's 16 years is a modeled figure, so treat the longer horizon as an upper case, not a promise.

Which health risks do both breeds share?

Both breeds share kneecap slippage, a hip disease of young dogs and dental disease in PetBudget's data. These are the three bills that decide a bad year, and the sizes of the bills do not change with the size of the dog.

Patellar luxation. The kneecap slides out of its groove, and the dog skips or holds a back leg up. MetLife Pet Insurance puts surgery at $1,000 to $5,000 per leg and says it is often recommended for grades II through IV. Grade I may need only monitoring.

Legg-Calve-Perthes disease. Blood supply to the top of the thigh bone fails in a young dog, and the joint collapses. Embrace Pet Insurance estimates femoral head removal at $1,200 to $3,000 per hip and says it most often appears between five and eight months of age. Embrace's page does not name either of these two breeds, but Wikipedia lists the syndrome for the Toy Fox Terrier.

Dental disease. Small mouths crowd teeth, and plaque turns to gum disease fast. A Banfield analysis reported in Veterinary Practice News found that 78 percent of dogs age 3 and older had oral disease, with small breed size listed as a risk factor. Banfield published it in February 2010, so the figure is old, but it is a useful baseline.

The Toy Fox has one extra item. Wikipedia lists von Willebrand disease, a bleeding disorder, for the breed, so ask the breeder about testing before any surgery or dental extraction.

How much should you set aside for the health bills?

Set aside $2,000 for either breed, which is the model's emergency reserve for a small dog. A single kneecap surgery on both legs at the top of the MetLife range would use $10,000, so the reserve covers a lower-grade case and a single dental procedure, not the worst case.

A MetLife survey of 1,000 pet owners in 2025 found that 15% had spent $3,000 or more on an unexpected vet bill and that about 90% had no savings account for pet costs. That is the case for either insurance or a funded reserve. Our pet insurance versus emergency fund guide helps you pick.

Enroll a puppy before a first knee or hip problem is noted. A joint condition that appears before enrollment is usually excluded as pre-existing.

What mistakes do buyers make when comparing the two?

Buyers most often compare the wrong numbers. Four mistakes are worth avoiding, and each one changes the answer.

1. Comparing lifetime totals across different lifespans. The $7,210 lifetime gap is mostly three extra years of a dog's life. Compare by year, not by total.
2. Treating the puppy price as the whole decision. The $300 purchase gap is paid once, while the $187 annual gap repeats every year.
3. Assuming a smaller dog has smaller vet bills. Surgery prices in MetLife's and Embrace's guides are per leg or per hip and are not scaled to body weight, so a 6-pound dog can cost the same to operate on as a 20-pound dog.
4. Skipping dental money in the budget. Both breeds' vet lines assume routine care, and a dental year with extractions sits on top of that baseline.

A fifth point applies only to the Toy Fox. At 4 to 9 pounds it is a very small dog, so consider adding baby gates and a ramp for the sofa to the first-year supplies line.

Which breed fits which home?

Pick the Toy Fox Terrier if you live in a small space, want a dog under 10 pounds and want the lowest food bill. Pick the Rat Terrier if you want a sturdier dog for a household with older children and a yard, and you can give it about an hour of exercise a day.

If you want	Choose
The lowest food and supply costs	Toy Fox Terrier
The lowest year-one cost	Rat Terrier
A dog under 10 pounds	Toy Fox Terrier
More size options to pick from	Rat Terrier
A longer modeled lifespan	Rat Terrier

Neither breed is a low-effort pet. PetBudget's data rates both at an energy level of 4 out of 5, so expect a dog that wants to run and play every day.

How do they compare with Chihuahuas and Miniature Pinschers?

Both terriers sit in the middle of the small-dog cost range. The Toy Fox is the cheapest of the four breeds below, and the Rat Terrier is the most expensive per year.

Breed	Annual cost	Lifetime cost	Weight
Toy Fox Terrier	$1,483	$21,585	4 to 9 pounds
Miniature Pinscher	$1,544	$23,922	8 to 11 pounds
Chihuahua	$1,599	$26,291	2 to 6 pounds
Rat Terrier	$1,670	$28,795	10 to 25 pounds

The Chihuahua and Miniature Pinscher pages carry their own numbers, and our Chihuahua price guide goes deeper on that breed.

Frequently asked questions

Do Toy Fox Terriers bark a lot?

PetBudget's data does not rate barking, so there is no figure to quote. Terrier breeds are alert by nature, and the model rates the Toy Fox's temperament as playful, alert and spirited. Early training and enough exercise reduce nuisance barking.

How much does a Toy Fox Terrier puppy cost?

PetBudget models the purchase price at $1,200, which is an estimate and not a quoted price. Real prices vary by breeder, location and health testing. Ask what is included, and ask for kneecap and hip results on the parents.

Can a Toy Fox Terrier live with children?

The breed is very small, so it is more fragile than a Rat Terrier. Supervise young children and teach them to pick the dog up properly. A fall from arm height can hurt a dog of 4 to 9 pounds.

Is the Toy Fox Terrier hypoallergenic?

No. PetBudget's breed data does not flag either the Toy Fox Terrier or the Rat Terrier as hypoallergenic, and both have a shedding rating of 3 out of 5. The short coat sheds fine hairs that are easy to vacuum but not allergy-proof.