Type B Rat Terrier

Teddy Roosevelt Terrier

Quick Facts

🐕 Breed Group
Terrier Group
📏 Size Category
Small
📏 Height
Males: 8-15 inches, Females: 8-15 inches
⚖️ Weight
Males: 8-25 pounds, Females: 8-25 pounds
⏱️ Life Expectancy
14-16 years
🧣 Coat Type
Short, dense, close-lying
🎨 Coat Colors
Bicolor and tricolor combinations; white base with black, tan, chocolate, or blue markings
😀 Temperament
Alert, intelligent, confident, affectionate
🏃 Exercise Needs
Moderate
🎓 Training Difficulty
Moderate
👶 Good with Children
Yes, with supervision for young children
🐾 Good with Other Pets
Good with dogs; caution with small animals

Other Names & Breed Recognition

The Type B Rat Terrier is a designation that most people outside of terrier history circles have never encountered, but it carries real significance for anyone tracing the development of American small terriers. The name refers specifically to what is now formally recognized as the Teddy Roosevelt Terrier - a short-legged, heavy-boned variation of the American Rat Terrier that was distinguished from its longer-legged cousin through a classification system that split the two types before the shorter variety received its own distinct name.

The Type A and Type B classification emerged from within the rat terrier breeding community as a practical way to differentiate two distinct physical types that were being produced within the same general breeding population. Type A designated the taller, longer-legged version - what most people today simply call the Rat Terrier. Type B designated the shorter, more substantial dog with heavier bone, a lower-set body, and a distinctly different working profile suited to smaller quarry in tight spaces. When the United Kennel Club formally recognized the shorter variety as a separate breed, it chose the name Teddy Roosevelt Terrier in honor of the president whose terriers were said to include dogs of this type.

The Teddy Roosevelt Terrier is the breed's current and preferred formal name, recognized by the United Kennel Club and increasingly familiar to terrier enthusiasts beyond the core breeding community. The National Teddy Roosevelt Terrier Club serves as the breed's primary organizational home in the United States. American Rat Terrier, particularly the short-legged variety, appears in older literature and in casual conversation among hunters and owners who grew up with the breed before the formal separation was widely adopted.

Type B Rat Terrier remains in use primarily among people with historical knowledge of the classification system - breeders, researchers, and enthusiasts who want to specifically reference the developmental period before the Teddy Roosevelt Terrier name was established. It is a useful historical term that connects the breed to its origins within the broader rat terrier family and to the process by which American working terriers were sorted, classified, and eventually formalized into distinct breeds.

Type B Rat Terrier Organizations & Standards

The Teddy Roosevelt Terrier is recognized by the United Kennel Club, which has served as the breed's primary registry and the home of its formal standard since the UKC granted the breed full recognition. The UKC's approach to the breed reflects its broader philosophy of valuing working ability alongside conformation - the Teddy Roosevelt Terrier standard describes a dog that should be capable of the work its ancestors performed rather than one shaped purely by aesthetic preferences.

The National Teddy Roosevelt Terrier Club is the breed's parent club and the central organizational hub for breeders, owners, and enthusiasts in the United States. The club maintains the breed standard, promotes health testing, organizes events, and serves as the point of contact for anyone seeking information about the breed or looking for reputable breeders. Its role in shaping how the breed develops and is presented to the public is significant.

The breed standard calls for a compact, muscular dog with heavier bone than the standard Rat Terrier and a noticeably lower-to-ground profile. The head is broad and wedge-shaped, with a strong muzzle and a well-defined but not exaggerated stop. Eyes are oval, dark, and alert. Ears may be erect, tipped, or button. The neck is clean and muscular. The body is slightly longer than tall, with a level topline, a deep chest, and well-sprung ribs that convey substance without coarseness. The tail may be natural or docked; both are acceptable under the standard.

Coat color in the Teddy Roosevelt Terrier is varied and includes bicolor and tricolor combinations on a white base, as well as solid patterns. The coat itself is short, dense, and close-lying. Acceptable colors include combinations of white with black, tan, chocolate, blue, and other recognized markings. Merle is not an acceptable color under the current standard due to associated health concerns.

Health testing priorities for the breed include patella evaluation, given the short-legged conformation's potential for joint stress, and eye certification. Responsible breeders screen for these conditions and make results available to buyers. The breed benefits from its origins as a working terrier - selection for functional soundness over generations has produced a generally healthy and long-lived dog when bred by conscientious breeders who prioritize health alongside type.

Kennel Club Recognition

  • United Kennel Club (UKC): Recognized, Terrier

Type B Rat Terrier Physical Description

The Teddy Roosevelt Terrier presents a physical profile that is immediately distinct from its taller Rat Terrier cousin - lower to the ground, heavier in bone, and built with the compact solidity of a dog designed to work in tight spaces and rough conditions. This is not a delicate or refined dog. It is a working terrier in the classic sense, with a structure that prioritizes functional strength and agility over elegance or exaggeration.

The head is broad and moderately wedge-shaped when viewed from above, with a skull that is slightly wider than the muzzle but not dramatically so. The stop is defined and moderate. The muzzle is strong and of good length, with a powerful jaw capable of the gripping work terriers were originally bred to perform. The nose is black or self-colored depending on coat color. Lips are tight and clean, with no excess flesh that would impede the dog's utility in the field.

Ears come in three acceptable types - erect, tipped, and button - and the breed standard permits all three as equally correct. Erect ears give the dog an alert, foxlike expression. Tipped and button ears fold forward at the tip or at mid-ear respectively. All three types should be in proportion to the head and set at or above the outer corner of the eye. Whatever the ear type, the expression behind it should be keen, intelligent, and engaged.

Eyes are oval in shape, dark in color, and set moderately apart. The gaze of a Teddy Roosevelt Terrier communicates alertness and curiosity - this is a breed that is always processing its environment. Light or round eyes are considered a fault, as they detract from both the characteristic expression and, in the eyes of many breeders, suggest a departure from working type.

The neck is clean, muscular, and of moderate length, flowing smoothly into well-laid shoulders without throatiness or excessive dewlap. Shoulder angulation should provide good reach in movement. The front legs are straight, strong, and well-boned - noticeably heavier in bone than the standard Rat Terrier's legs. The pasterns are strong and slightly flexible. Feet are compact and round with thick, tough pads.

The body is slightly longer than it is tall, giving the dog a rectangular outline that distinguishes it clearly from the more square profile of a typical terrier. The chest is deep and well-developed, reaching to the elbow to provide good lung capacity. Ribs are well-sprung without being barrel-shaped. The topline is level from withers to croup, with a loin that is short and muscular. The croup is slightly rounded.

Hindquarters are well-muscled with good angulation to match the front assembly. The stifle is well-bent and the hock is perpendicular to the ground when the dog is standing naturally. Movement should be free, effortless, and ground-covering despite the dog's compact size.

The tail may be natural or docked. Natural tails may be any length and are carried upright when the dog is alert. Docked tails are historically common in working terriers and remain acceptable under the breed standard.

Coat is short, dense, close-lying, and glossy. It provides weather resistance without the maintenance demands of longer or rougher coats. Color patterns include bicolor and tricolor combinations on a white base - white with black and tan being among the most common and recognizable. Solid colors other than white also occur. Height ranges from 8 to 15 inches at the shoulder, with weight ranging from 8 to 25 pounds depending on size. The overall impression is of a substantial, capable, and alert small dog with more muscle and bone than its size might initially suggest.

Affectionate With Family
The Teddy Roosevelt Terrier forms close bonds with its family and is genuinely warm and engaged with the people it trusts. These are devoted dogs that prefer to be where their people are.
Good With Young Children
Generally good with children who interact respectfully, but supervision is recommended with very young children. Terrier confidence means this dog will assert itself if it feels cornered or mishandled.
Good With Other Dogs
Typically manageable with other dogs when properly socialized, though the breed's terrier confidence means it may not defer to larger dogs as readily as its size might suggest.
Shedding Level
The breed sheds moderately year-round. Short hairs can embed in fabric and upholstery, so regular brushing helps keep shedding manageable in the home.
Coat Grooming Frequency
The short, close-lying coat is among the lowest-maintenance in the terrier group. Weekly brushing and occasional bathing are all the coat requires.
Drooling Level
The Teddy Roosevelt Terrier is not a drooling breed. Owners can expect a dry-mouthed companion under virtually all normal circumstances.
Coat Type
The coat is short, dense, smooth, and close-lying with a natural gloss. No trimming, stripping, or professional grooming is required to maintain it.
Openness To Strangers
The Teddy Roosevelt Terrier is alert and initially reserved with strangers, observing before engaging. Once it accepts a person, it is warm and friendly.
Playfulness Level
Energetic and enthusiastic, this breed brings genuine playfulness to daily life. It is a willing and active participant in games and interactive activities.
Watchdog/Protective Nature
Alert and vocal when strangers approach, the Teddy Roosevelt Terrier makes a reliable alarm dog. Its confidence means it takes the watchdog role seriously despite its small size.
Adaptability Level
The breed's compact size and moderate exercise needs make it adaptable to a range of living situations, including smaller homes, provided daily exercise and mental stimulation are provided.
Trainability Level
Intelligent and quick to learn, the Teddy Roosevelt Terrier responds well to consistent positive reinforcement. Its working intelligence means it picks up new concepts readily when training is engaging.

Type B Rat Terrier History & Development

The history of the Type B Rat Terrier is inseparable from the broader story of American working terriers and the informal but deliberate breeding programs that farmers, hunters, and working dog enthusiasts developed throughout the nineteenth and early twentieth centuries. American terriers of this era were not bred to a precise standard overseen by a kennel club. They were bred to work - to control vermin on farms, to hunt small game, and to serve as all-purpose utility dogs in rural households where a dog that could not earn its keep was an expense few could afford.

The breeding stock that produced American rat terriers was diverse. English terriers of various types - Smooth Fox Terriers, Bull Terriers, and others - were crossed with Beagles for nose, Whippets for speed, and various other breeds as circumstances and availability allowed. From this varied foundation emerged dogs of different sizes and builds, some taller and leggier, others shorter and heavier-boned. The two distinct physical types that emerged became the basis for the Type A and Type B classification that would eventually be used to sort them into separate breed categories.

The Type B designation - for the shorter, heavier, lower-set dogs - was a practical label before it was a formal one. Breeders who valued the shorter type for its particular working strengths in tight quarry situations bred selectively for it, and over time a consistently distinct type emerged. The connection to President Theodore Roosevelt, for whom the Teddy Roosevelt Terrier is named, reflects the president's well-documented enthusiasm for these small American working terriers during his time in office and beyond. While the direct historical link between Roosevelt's personal dogs and the breed's lineage is a matter of some discussion among historians, the name honors the cultural association between American working terriers and Roosevelt's affection for them.

The United Kennel Club's formal recognition of the Teddy Roosevelt Terrier as a separate breed from the Rat Terrier gave the shorter type its own identity, its own standard, and its own registry structure. This recognition was an important step in preserving the shorter type's distinct characteristics at a time when breeding pressure from the more numerous taller Rat Terrier could potentially have absorbed or diluted the shorter variety.

The Type B Rat Terrier name persists in historical records, in the memories of longtime breeders, and in conversations about the breed's development. It represents the classification stage - before formal recognition, when dedicated breeders were making the case that the shorter dog was not simply a smaller or inferior version of the taller rat terrier but a genuinely different type with its own working strengths, its own structural characteristics, and its own place in American terrier history. That case was made successfully, and the Teddy Roosevelt Terrier today stands as its own breed with its own community of dedicated breeders and owners who value both its heritage and its considerable practical qualities as a companion and working terrier.

Type B Rat Terrier Temperament & Personality

The Teddy Roosevelt Terrier has the personality of a working terrier in a compact package, which means you are getting a dog with more drive, more confidence, and more opinion than its small size might lead you to expect. This is not a lapdog with terrier ancestry. It is a terrier - curious, energetic, tenacious, and engaged with the world around it in a way that demands an owner who can keep up.

Within the family, the Teddy Roosevelt Terrier is affectionate and devoted. These dogs bond closely with their people and tend to be warm and interactive in the home. They enjoy physical closeness and are happy to settle in with family members after their exercise needs have been met. The flip side of that bonding tendency is that they do not do well with extended isolation. A Teddy Roosevelt Terrier left alone for long periods will find ways to entertain itself, and those ways are rarely what the owner had in mind.

With children, the breed is generally good, particularly with children who understand how to interact respectfully with a small dog. The Teddy Roosevelt Terrier is sturdy for its size and more tolerant of activity and noise than many small breeds, but very young children should be supervised. Not because the dog is likely to bite without cause, but because a terrier that is startled, grabbed, or cornered may react defensively. Teaching children appropriate dog interaction is as important as socializing the dog to children.

With other dogs, the Teddy Roosevelt Terrier is typically manageable with proper socialization. The breed's pack heritage - these were dogs that worked alongside other dogs on farms and in fields - generally supports tolerant social behavior with familiar dogs. With unfamiliar dogs, particularly larger ones that approach with too much assertiveness, the Teddy Roosevelt Terrier may not back down as readily as its size might suggest would be prudent. Terrier confidence is a feature of the breed that does not always scale to body size.

Prey drive is present and meaningful. Small animals - rodents, birds, squirrels, anything that runs quickly - trigger the hunting instinct this breed was built around. Early socialization can help manage coexistence with cats and other small household pets, but the instinct runs deep and should not be assumed to have disappeared simply because the dog has not acted on it recently.

With strangers, the Teddy Roosevelt Terrier is typically alert and initially reserved rather than immediately welcoming. These are not dogs that greet every newcomer with enthusiasm. They observe, assess, and then - once they have decided a person is acceptable - engage warmly. That measured approach with new people makes them reasonable watchdogs; they will reliably alert to unfamiliar people entering their space.

The breed's energy level is moderate to high, and its intelligence means it needs mental engagement as well as physical exercise. A bored Teddy Roosevelt Terrier will become a creative one, and terrier creativity tends to express itself in digging, vocalization, and the investigation of anything that has not been securely stored.

Type B Rat Terrier Family Life & Living Requirements

The Teddy Roosevelt Terrier fits well into active family life when its needs are understood and consistently met. This is a breed that adapts readily to different living situations - including smaller homes and apartments - provided it receives adequate daily exercise and mental stimulation. The compact size that made the Type B Rat Terrier useful in tight working spaces translates into a practical household footprint, but do not mistake small for low-maintenance. This is a high-engagement dog in a small body.

The breed does well with older children and with families that include regular activity and interaction. Children who want a dog that will play actively, explore enthusiastically, and match their energy will find the Teddy Roosevelt Terrier an excellent companion. As with any terrier, interactions between the dog and very young children should be supervised. The dog's confidence and terrier nature mean it will assert itself if it feels threatened, and young children may not read the warning signs a dog is giving before that happens.

Exercise needs are moderate and manageable. Daily walks, active play sessions in a fenced yard, or off-leash time in a secure area will satisfy most Teddy Roosevelt Terriers. The breed's working heritage means it benefits from activities that engage the mind as well as the body. Scent games, fetch, and basic training sessions all contribute to a content and well-balanced dog. Breed sports including earthdog, barn hunt, and agility suit the Teddy Roosevelt Terrier's abilities and instincts particularly well.

The breed's prey drive means that outdoor time should be in secured areas. A Teddy Roosevelt Terrier that catches a scent or spots a squirrel is a dog that may be moving faster than the leash allows. Recall under distraction is achievable with consistent training but should not be taken for granted in a dog with this level of hunting instinct.

Indoors, the well-exercised Teddy Roosevelt Terrier is a calm and pleasant companion. It does not require a large home, but it does require people who are present and engaged. This is a breed that thrives on interaction and does poorly when left alone for extended periods. Households where someone is regularly home, or where the dog has appropriate companionship and enrichment in their absence, suit this breed best.

Type B Rat Terrier Training & Exercise Needs

Training the Teddy Roosevelt Terrier is a rewarding experience for owners who come prepared for a dog with opinions. This breed is intelligent - genuinely, practically intelligent in the way working terriers are intelligent, which means it learns quickly, remembers well, and will figure out inconsistencies in your training before you notice them yourself. That intelligence is an asset when the training is engaging and well-structured. It becomes a liability when sessions are repetitive, overly long, or rely on methods the dog finds unpleasant or pointless.

Positive reinforcement works well with this breed. Food motivation is typically strong, and combining clear, consistent cues with immediate and meaningful rewards produces solid results. The Teddy Roosevelt Terrier responds to fairness and clarity. It does not respond well to harshness, intimidation, or correction-heavy approaches. A terrier that has been pushed too hard with aversive methods will simply become more resistant and less cooperative - not because it is being difficult but because it has learned that working with you produces negative outcomes.

Basic obedience is entirely achievable and important. Sit, stay, recall, leash manners, and polite greetings are all within reach for a well-handled Teddy Roosevelt Terrier. Starting training early - in puppyhood - and maintaining it consistently through adolescence produces the most reliable results. Adolescence in terriers can test even experienced owners, as the dog's confidence and independence increase and its investment in compliance temporarily drops. Consistent, reward-based training carried through this phase pays off significantly in the long run.

Recall deserves special attention. The prey drive in this breed is meaningful, and a Teddy Roosevelt Terrier that has spotted something worth chasing may not respond to a recall cue it performs reliably at home. Practice recall in progressively more distracting environments and reward it heavily every time. Off-leash time should only happen in fully secured areas.

Exercise requirements are moderate. Daily walks of 20 to 30 minutes plus active play or training sessions will satisfy most Teddy Roosevelt Terriers. The breed excels in dog sports that tap into its natural abilities - earthdog and barn hunt events are particularly well-suited to its instincts, while agility, rally, and obedience provide structured outlets for its intelligence and trainability. Mental exercise is as important as physical activity for a breed this sharp.

Type B Rat Terrier Health Concerns

The Teddy Roosevelt Terrier is generally a healthy and long-lived breed, benefiting from a working heritage that selected for functional soundness across multiple generations. Dogs with significant structural or health problems were not useful in the field, and that selection history has contributed to a gene pool that is reasonably free of the severe inherited conditions that affect some breeds developed under more aesthetically focused selection pressure. With appropriate care and responsible breeding, a Teddy Roosevelt Terrier can be expected to live 14 to 16 years.

Legg-Calve-Perthes disease, a condition affecting the head of the femur and seen occasionally in small terrier breeds, is worth awareness. It typically manifests in young dogs and causes pain and lameness in the affected hip. Early diagnosis and appropriate treatment - which may include surgery in more severe cases - leads to good outcomes in most affected dogs.

Common Health Issues

  • Patellar luxation - Patellar luxation
  • Hip dysplasia - Hip dysplasia
  • Lens luxation - Lens luxation
  • Dental disease - Dental disease
  • Legg-Calve-Perthes disease - Legg-Calve-Perthes disease

Preventive Care & Health Monitoring

  • OFA patella evaluation for breeding stock - OFA patella evaluation for breeding stock
  • OFA hip evaluation for breeding stock - OFA hip evaluation for breeding stock
  • Periodic eye certification - Periodic eye certification
  • Regular dental care including brushing and professional cleaning - Regular dental care including brushing and professional cleaning
  • Annual veterinary wellness exams - Annual veterinary wellness exams
  • Routine foot and nail inspection - Routine foot and nail inspection

Type B Rat Terrier Grooming & Maintenance

The Teddy Roosevelt Terrier's short, close-lying coat is one of the breed's practical advantages as a companion dog. There is no trimming, no stripping, no professional grooming schedule to maintain. The coat sheds dirt readily, dries quickly, and requires only basic attention to stay clean and healthy. For owners who want a dog that looks neat without significant ongoing effort, the Teddy Roosevelt Terrier delivers.

Weekly brushing with a soft bristle brush or rubber grooming mitt keeps the coat conditioned, removes loose hair before it ends up on the furniture, and gives the owner a regular opportunity to check the dog's skin and overall condition. The Teddy Roosevelt Terrier sheds, and while the individual hairs are short, they can embed in fabric and upholstery. Regular brushing significantly reduces the volume of shed hair in the home environment.

Bathing should be done as needed - when the dog is visibly dirty or develops a noticeable odor. Because the coat is short and close, it does not trap dirt or debris the way longer coats do, and most Teddy Roosevelt Terriers do not require frequent baths. Using a gentle dog shampoo and thoroughly rinsing the coat prevents skin irritation. Drying is quick given the coat length.

Ear care is straightforward for a breed with erect, tipped, or button ears, as the ear canal has better airflow than the pendant ears of drop-eared breeds. Weekly visual inspection is still a good habit. Look for redness, unusual odor, or discharge, and clean with a veterinarian-approved solution when wax accumulation warrants it.

Nail trimming every three to four weeks is standard. An active dog that exercises on hard surfaces may wear its nails more quickly and need less frequent trimming. Check the nails at each grooming session and trim before they reach a length that affects foot posture.

Dental hygiene is particularly important for small breeds. Daily brushing with a canine toothpaste is the most effective preventive measure against periodontal disease. If daily brushing is not practical, dental chews and water additives can supplement but should not fully replace brushing in a breed with the small jaw that makes crowding a genuine risk.