
The Rat Terrier is an American working farm dog — a compact, smooth-coated terrier bred to clear vermin from barns and farmsteads and to hunt small game. It comes in two AKC size divisions: Miniature (10-13 inches at the shoulder) and Standard (over 13 up to 18 inches), generally weighing 10-25 pounds depending on size. The buying decision hinges on understanding that 'small and low-grooming' does not mean 'low-energy lapdog' — this is a tireless, intelligent, high-prey-drive terrier in a small package. Physically the Rat Terrier is efficient and athletic: a short, dense, glossy single coat in a wide range of pied (white-with-color) patterns, a muscular compact body, and a quick, ground-covering gait built for a long working day. The coat is genuinely easy — a weekly brush — but it offers little cold protection, so northern owners should plan a coat in winter. Temperament is the part new owners underestimate. Rat Terriers are smart, alert, affectionate, and intensely bonded to their families — often described as having a sense of humor — but they are also driven, vocal, and strongly prey-motivated. They will chase cats, squirrels, and small pets, dig with enthusiasm, and alert-bark at activity. They are usually good with children and family dogs they are raised with, and can be reserved with strangers. Who the Rat Terrier is right for: an active owner who wants a clever, trainable, low-grooming companion, will provide daily exercise and mental work, and can manage a strong prey drive and a secure yard. Who it is wrong for: a household with free-roaming small pets the dog won't accept, an owner expecting a quiet low-energy dog because it is small, or anyone who won't fence and supervise a determined digger and chaser.
Life Span
12–18 years
Weight
4.5–11 kg
Height
25–46 cm
moderate
Exercise
moderate
Grooming
moderate
Shedding
Yes
Good with Kids
Yes
Good with Pets
Friendly
Apartment
The Rat Terrier is a genuinely American breed, developed by working farmers in the 19th and early 20th centuries from imported terriers — including the Manchester Terrier, Smooth Fox Terrier, and old feist-type ratting dogs — later infused with Whippet, Beagle, and Italian Greyhound blood for speed and scenting. The job was vermin control: clearing rats and other pests from barns, granaries, and farmsteads, and hunting small game. The name is pop…
The Rat Terrier belongs to the Terrier Group.
The average lifespan of a Rat Terrier is 12 to 18 years.
Rat Terrier dogs are valued for their friendly, inquisitive, lovable nature.
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Rat Terrier care is low on grooming and high on exercise, containment, and a few breed-specific health checks owners rarely anticipate. Exercise and brain: 45-60 minutes of real daily activity plus mental work. This is a working terrier — walks, fetch, flirt-pole, scent games, and trick training all qualify, and a bored Rat Terrier digs, barks, and finds its own entertainment. Two shorter sessions beat one long one. Containment: fence securely and supervise outdoors. The breed's prey drive and digging instinct mean an under-fenced yard becomes an escape-and-chase problem; a Rat Terrier in pursuit of a squirrel does not hear recall. This is a planning decision, not a training fix. Coat and warmth: a 5-minute brush once a week handles the short single coat. It sheds modestly year-round. Because the coat is thin, add a dog coat in cold weather — the breed is not built for prolonged cold. Weight: keep ribs easily felt and a clear waist. Small terriers gain quietly on table scraps, and excess weight worsens the breed's real knee (patellar) and joint risks. Feed two measured meals; cut portions 10% and recheck in four weeks if the waist softens. Decision rule: if a Rat Terrier suddenly squints, has a red or cloudy painful eye, or paws at its face, treat it as a same-day emergency and ask the vet specifically about primary lens luxation — it is a known, often hereditary risk in this breed, is acutely painful, and can cause permanent blindness within hours if the displaced lens is not treated promptly.
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Rat Terrier Care Guide
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