Rat Terrier Yorkie Mix: Complete Breed Profile, Care & Cost Guide
Everything about the Rat Terrier Yorkie mix: size, temperament, coat types, health risks, grooming needs, and 2026 pricing from breeders and rescues.
What Is a Rat Terrier Yorkie Mix?
The Rat Terrier Yorkie mix — sometimes called a "Ratkie" or "Yorkie Rat" — is a designer cross between the Rat Terrier and the Yorkshire Terrier. This pairing blends a sturdy, athletic American farm dog with one of the world's most popular toy breeds, producing a small but spirited companion that typically weighs between 7 and 18 pounds.
Unlike established purebreds with predictable breed standards, every Rat Terrier Yorkie mix is a genetic lottery. One littermate might inherit the Yorkie's silky floor-length coat and lap-dog disposition, while another gets the Rat Terrier's short, sleek fur and relentless prey drive. Understanding both parent breeds is essential before committing to this cross.
This guide covers everything prospective owners need to know — from generation genetics and realistic size ranges to the health conditions this mix can inherit from both parent lines. We'll also break down 2026 pricing so you can budget accurately.
Parent Breed Breakdown: Rat Terrier vs. Yorkshire Terrier
Before predicting what a Rat Terrier Yorkie mix might look or act like, you need to understand the two very different dogs contributing DNA to this cross.
| Trait | Rat Terrier | Yorkshire Terrier |
|---|---|---|
| AKC Group | Terrier Group | Toy Group |
| Weight | 10–25 lb (4.5–11.3 kg) | 4–7 lb (1.8–3.2 kg) |
| Height | 10–18 inches at shoulder | 7–8 inches at shoulder |
| Coat | Short, smooth, dense | Long, fine, silky (hair-like) |
| Shedding | Moderate, seasonal | Minimal (hair vs. fur) |
| Energy Level | High — 45–60 min daily exercise | Moderate — 20–30 min daily |
| Prey Drive | Very high (bred to hunt rodents) | Moderate (terrier ancestry) |
| Vocalization | Moderate barker, alert | Frequent barker, vocal |
| Lifespan | 12–18 years | 11–15 years |
| Origin | USA — farm/ratting dog, early 1900s | England — mill worker's companion, 1800s |
The Rat Terrier, recognized by the AKC since 2013, descends from Fox Terriers and other hunting breeds used on American farms to control vermin. They're intelligent, athletic, and surprisingly trainable for a terrier — many excel in agility and barn hunt competitions.
The Yorkshire Terrier, one of the AKC's most consistently popular breeds, originated in northern England's textile mills where workers bred small terriers to catch rats in factories. Despite their glamorous modern reputation, Yorkies carry genuine terrier grit beneath that silky coat.
This shared terrier heritage means the Rat Terrier Yorkie mix tends to be bold, alert, and stubborn — traits that make them entertaining companions but challenging for first-time owners who expect an easygoing lap dog.
Understanding Generations: F1, F1B, and Beyond
Generation terminology matters for designer mixes. Here's what you'll encounter when researching Rat Terrier Yorkie mix breeders:
- F1 (First Generation): One purebred Rat Terrier × one purebred Yorkshire Terrier. Maximum genetic diversity, but the most unpredictable outcome in coat, size, and temperament. Puppies in the same litter can look dramatically different.
- F1B (First Generation Backcross): An F1 Rat Terrier Yorkie mix bred back to one of the parent breeds — usually the Yorkie, to push toward a smaller size and lower-shedding coat. Slightly more predictable than F1.
- F2 (Second Generation): Two F1 Rat Terrier Yorkie mixes bred together. This produces the widest variation — recessive traits from both breeds can surface unexpectedly. Least predictable generation.
- Multigen (F3+): Multiple generations of Rat Terrier Yorkie mixes bred together. Traits begin stabilizing, but this cross is too new and uncommon for true multigen lines to exist widely as of 2026.
Most Rat Terrier Yorkie mixes available through breeders or rescues are F1 crosses. Unlike the well-established Labradoodle or Goldendoodle lines with decades of multigen breeding behind them, the Rat Terrier Yorkie mix remains a niche pairing. This means you're almost always getting an F1 puppy with the full spectrum of trait variability that entails.
Size, Weight, and Physical Appearance
The size range for a Rat Terrier Yorkie mix is broader than most prospective owners anticipate. The outcome depends heavily on which parent's size genes dominate and whether the Rat Terrier parent was a Miniature (10–13 inches) or Standard (13–18 inches) variety.
| Measurement | Minimum (Yorkie-dominant) | Typical Range | Maximum (Rat Terrier-dominant) |
|---|---|---|---|
| Weight | 7 lb (3.2 kg) | 10–15 lb (4.5–6.8 kg) | 18 lb (8.2 kg) |
| Height | 8 inches (20 cm) | 10–14 inches (25–36 cm) | 16 inches (41 cm) |
| Body Type | Compact, fine-boned | Sturdy but small | Athletic, muscular |
A useful rule of thumb: expect the adult weight to fall roughly midway between the two parents. If the breeder can show you both parents, you can estimate more precisely. An F1 puppy from a 5-lb Yorkie and a 15-lb Miniature Rat Terrier will typically land around 9–12 lb at maturity.
Ear shape is another wild card. Rat Terriers carry genes for both erect and button ears; Yorkies have small, V-shaped erect ears. Puppies may have fully erect ears, semi-folded "rose" ears, or even one ear that stands and one that folds — which, while asymmetrical, doesn't affect health.
Coat Types and the Hypoallergenic Question
This is where the Rat Terrier Yorkie mix shows its most dramatic variation. The two parent breeds have fundamentally different coat genetics, and puppies can inherit anything in between.
Three coat outcomes are possible in F1 litters:
- Yorkie-dominant coat: Long, fine, silky hair that grows continuously and requires daily brushing plus professional grooming every 6–8 weeks. Closest to "low-shedding" — hair grows like human hair rather than cycling through a shedding season. This is the outcome people hope for when seeking a hypoallergenic dog.
- Rat Terrier-dominant coat: Short, smooth, dense fur with a definite shedding cycle. Low-maintenance — weekly brushing with a rubber curry brush handles dead hair. Sheds moderately, especially during spring and fall coat blows.
- Intermediate/wiry coat: A medium-length, slightly wavy or wiry texture that doesn't fully match either parent. May require brushing 2–3 times weekly and occasional hand-stripping or clipping. Moderate shedding.
Is the Rat Terrier Yorkie mix hypoallergenic? Not reliably. Only puppies that strongly inherit the Yorkie's hair-type coat approach low-shedding status, and even then, no dog is truly hypoallergenic. Allergens come from dander, saliva, and urine — not just fur. If you have dog allergies, spend time with the specific puppy before committing, and understand that littermates can trigger different allergic responses depending on their individual coat type.
According to the AKC, there is no completely hypoallergenic dog breed — only breeds that tend to produce fewer allergens. With a mixed breed carrying one high-shedding parent, the gamble is significant.
Temperament: Best-Case Scenarios and Challenges
Both parent breeds are terriers at heart, which shapes the Rat Terrier Yorkie mix's personality in predictable ways — even when physical traits vary wildly.
What Most Owners Can Expect
- Alert and vocal: This mix tends to be an excellent watchdog, quick to announce visitors, delivery drivers, and suspicious leaf movements. Expect barking — sometimes a lot of it.
- Loyal bonding: Both breeds form intense attachments to their primary person. Rat Terrier Yorkie mixes often become "velcro dogs" who follow you room to room.
- Intelligent but independent: They learn commands quickly but may decide compliance is optional. Terrier stubbornness is real — this is a dog that will test boundaries consistently.
- Playful and energetic: Plan for 30–45 minutes of daily activity, combining walks with interactive play. Puzzle toys and short training sessions help burn mental energy.
Challenging Scenarios to Prepare For
The less-discussed side of this mix involves prey drive and socialization sensitivity. Rat Terriers were literally bred to kill small animals, and that instinct doesn't disappear in a cross. Many Rat Terrier Yorkie mixes will chase squirrels, cats, and small dogs with genuine predatory intent — not just play.
Yorkies contribute a tendency toward wariness with strangers and potential resource guarding if not addressed early. Combined with the Rat Terrier's high arousal around small moving targets, an under-socialized Rat Terrier Yorkie mix can develop leash reactivity that makes walks stressful.
The best outcomes come from owners who start positive-reinforcement socialization before 16 weeks of age, expose the puppy to diverse people, surfaces, sounds, and other dogs, and commit to ongoing training using reward-based methods. Force-free training approaches — using treats, play, and clicker markers — work far better with terrier crosses than any aversive technique, which tends to increase fear-based reactivity.
Family Compatibility
This mix suits adults and families with children aged 8 and older. Their small size makes them fragile around toddlers who may drop, squeeze, or step on them. Yorkies in particular are prone to injury from rough handling, and any Rat Terrier Yorkie mix inheriting fine bone structure shares this vulnerability.
Multi-pet households with cats or small animals (rabbits, hamsters) should proceed cautiously. The prey drive from both parent breeds makes cohabitation risky without careful management and never leaving the dog unsupervised with smaller pets.
Health Considerations: Inherited Risks from Both Lines
A common marketing claim around designer dogs is "hybrid vigor" — the idea that crossing two breeds automatically produces healthier puppies. The reality, as explained in veterinary genetics research, is more nuanced. Mixed-breed dogs can inherit any genetic condition present in either parent breed. Hybrid vigor reduces the risk of conditions caused by inbreeding within a single breed's limited gene pool, but it does not eliminate breed-specific predispositions.
Conditions Inherited from the Yorkshire Terrier Side
- Patellar luxation: The kneecap slips out of its groove, causing intermittent skipping or lameness. Grades I–II may be managed conservatively; Grades III–IV often require surgical correction ($1,500–$3,500 per knee in 2026).
- Tracheal collapse: Weakening of the cartilage rings in the windpipe, causing a distinctive "honking" cough. Common in toy breeds. A harness (never a collar) for walks reduces tracheal pressure.
- Portosystemic shunt (PSS): A congenital liver vascular anomaly where blood bypasses the liver, causing toxin buildup. Symptoms include stunted growth, disorientation, and seizures. Surgical correction costs $3,000–$6,000+ at specialty centers.
- Dental disease: Yorkies are notorious for early, severe periodontal disease due to tooth crowding in a small jaw. Daily tooth brushing and professional cleanings under anesthesia ($400–$800 per session) starting by age 2–3 are essential.
Conditions Inherited from the Rat Terrier Side
- Patellar luxation: Also prevalent in Rat Terriers — this is a shared risk, making it the single most likely orthopedic concern for this mix.
- Cardiac conditions: Mitral valve disease appears in aging Rat Terriers. Annual cardiac auscultation during wellness exams helps catch early murmurs.
- Allergies: Both breeds are prone to atopic dermatitis — environmental allergies causing itchy skin, ear infections, and paw licking. Management includes Apoquel or Cytopoint injections ($50–$120/month depending on weight), medicated shampoos, and allergen avoidance.
- Legg-Calvé-Perthes disease: Degeneration of the femoral head (hip joint) in small breeds, typically appearing between 4–12 months of age. Requires surgical removal of the affected femoral head, with good prognosis for return to normal function.
Schedule a veterinary exam within 72 hours of bringing your puppy home. Ask your vet about:
- Baseline patellar evaluation at 6 months
- Cardiac auscultation at every annual exam
- Dental assessment starting at 1 year
- Whether genetic screening panels (e.g., Embark or Wisdom Panel) are appropriate for your individual dog
Always consult your veterinarian for personalized health guidance — this article is informational, not a substitute for professional veterinary care.
Recommended Health Screening
Responsible breeders of either parent breed should provide OFA (Orthopedic Foundation for Animals) patellar evaluations and cardiac clearances. If you're buying from a breeder, ask for documentation of these tests on both parents. It costs breeders roughly $150–$300 per parent for basic OFA screenings — a small investment that signals responsible practices.
Grooming, Exercise, and Daily Care
Care requirements for a Rat Terrier Yorkie mix depend almost entirely on which coat type the individual dog inherits.
Grooming by Coat Type
| Coat Type | Brushing Frequency | Professional Grooming | Estimated Annual Cost |
|---|---|---|---|
| Yorkie-dominant (long/silky) | Daily, 10–15 min | Every 6–8 weeks | $480–$720/year |
| Intermediate (wavy/wiry) | 2–3 times/week | Every 8–12 weeks (optional) | $120–$300/year |
| Rat Terrier-dominant (short) | Weekly, 5 min | Rarely needed | $50–$100/year |
Regardless of coat type, all Rat Terrier Yorkie mixes need regular nail trims every 2–3 weeks (overgrown nails alter foot mechanics and contribute to patellar stress), ear checks weekly (especially if ears fold, trapping moisture), and daily tooth brushing with a veterinary-formulated enzymatic toothpaste.
Exercise Requirements
Plan for 30–45 minutes of structured activity daily, split across two sessions. This might look like:
- A 15–20 minute morning walk on a well-fitted harness (protects the trachea, given Yorkie collapse risk)
- 10–15 minutes of afternoon training or puzzle-toy work
- An evening play session with a flirt pole or fetch in a fenced area
These dogs are not couch potatoes by default. Without adequate stimulation, they create their own entertainment — which usually means barking at windows, digging at carpets, or dismantling household items. A tired terrier is a good terrier.
Nutrition
Feed a small-breed formulation that meets AAFCO complete-and-balanced standards for your dog's life stage. A 12-lb Rat Terrier Yorkie mix typically needs 300–400 calories daily, split into two meals. Avoid free-feeding — small breeds are prone to obesity when food is always available, and excess weight directly stresses already-vulnerable patellar joints.
Cost, Availability, and Finding Your Dog
The Rat Terrier Yorkie mix is uncommon enough that you won't find dedicated breeding programs the way you would for Labradoodles or Cavapoos. Most litters are produced by small-scale breeders who occasionally cross these two breeds.
Pricing in 2026
| Source | Price Range | What's Typically Included |
|---|---|---|
| Small-scale breeder | $500–$1,200 | First vaccinations, deworming, basic health check |
| Breeder with health testing | $1,200–$2,000 | OFA parent clearances, genetic panel, microchip, spay/neuter contract |
| Rescue/adoption | $150–$400 | Spay/neuter, vaccinations, microchip, behavioral assessment |
First-year budget beyond purchase price: Expect to spend $1,200–$2,500 on veterinary care (initial exam series, spay/neuter if not included, preventives), supplies (crate, harness, puzzle toys, grooming tools), food ($240–$480/year for quality small-breed kibble), and pet insurance ($35–$65/month for comprehensive coverage on a small dog).
Finding a Rat Terrier Yorkie Mix
Because this is a niche cross, patience is required. Strategies that work:
- Rat Terrier and Yorkshire Terrier breed-specific rescues: Both breeds have active rescue networks that occasionally receive mixed-breed dogs. Check Rat Terrier Rescue Network and Yorkshire Terrier Club of America's rescue directory.
- Local shelters and Petfinder: Set up email alerts for "terrier mix" in your region. Many Rat Terrier Yorkie mixes are surrendered when owners underestimate the energy level and prey drive.
- Small-scale breeders: If pursuing a breeder, insist on meeting both parent dogs, seeing health clearances, and visiting the home environment. Avoid anyone who cannot show you the parents or who has multiple litters available year-round — these are red flags for backyard breeding operations.
Who Should (and Shouldn't) Get a Rat Terrier Yorkie Mix?
Ideal For:
- Active individuals or couples who want a small but sturdy adventure companion
- Experienced dog owners familiar with terrier personalities
- Homes with older children (8+) who understand gentle handling
- Apartment dwellers who can commit to daily outdoor exercise
- People who enjoy training challenges and interactive dog sports
Think Twice If:
- You have cats, rabbits, or other small pets
- You want a quiet dog — this mix barks
- You work long hours away from home (separation anxiety risk)
- You have toddlers who may accidentally injure a small dog
- You're a first-time owner expecting an easy, low-energy companion
Frequently Asked Questions
What two breeds make up the Rat Terrier Yorkie mix?
This designer cross combines the Rat Terrier (an American farm and hunting dog recognized by the AKC) with the Yorkshire Terrier (a toy breed with terrier roots from northern England). Both contribute terrier temperament traits — boldness, independence, and prey drive.
How big will a Rat Terrier Yorkie mix get?
Adult weight typically falls between 7 and 18 lb (3.2–8.2 kg), with most landing in the 10–15 lb range. Height ranges from 8 to 16 inches at the shoulder. The exact size depends on which parent's genes dominate and whether the Rat Terrier parent was Miniature or Standard variety.
What will the temperament be like?
Expect an alert, vocal, loyal dog with moderate-to-high energy and strong terrier instincts. Most are intelligent but stubborn, playful but prone to chasing small animals. Early socialization and positive-reinforcement training are essential for a well-adjusted adult.
Is the Rat Terrier Yorkie mix hypoallergenic or low-shedding?
Not reliably. Only puppies that strongly inherit the Yorkie's hair-type coat approach low-shedding. Puppies inheriting the Rat Terrier's short fur will shed moderately. No dog is truly hypoallergenic, and with one shedding parent breed, allergic reactions are possible regardless of coat outcome.
What health issues might this mix inherit?
The most common shared risk is patellar luxation (kneecap dislocation). Yorkie-inherited risks include tracheal collapse, portosystemic shunt, and severe dental disease. Rat Terrier-inherited risks include cardiac conditions, allergies, and Legg-Calvé-Perthes disease. Regular veterinary screening catches many of these early.
How much does a Rat Terrier Yorkie mix cost?
Breeder prices range from $500 to $2,000 depending on health testing and breeder reputation. Rescue adoption fees typically run $150–$400. First-year care costs beyond the purchase price average $1,200–$2,500 including veterinary care, supplies, food, and insurance.
Are Rat Terrier Yorkie mixes good with children?
They do best with children aged 8 and older who can handle a small dog gently. Their compact size makes them vulnerable to injury from rough play, and their terrier temperament means they may snap if cornered or hurt rather than retreating. Always supervise interactions between any dog and young children.
How long do Rat Terrier Yorkie mixes live?
Both parent breeds are relatively long-lived. With proper veterinary care, nutrition, and weight management, expect a lifespan of 12–16 years, with some individuals reaching 17 or 18 years — particularly those inheriting the Rat Terrier's longevity genetics.
Priya Sutaria
All our authors care for dogs every day — read more of their work on the authors page.
