
Lambert's horse, or mine, and though he is not as big as Jack, takes eager part in the fight with every bear and bobcat." Often confused with Skip the black and tan feist, the Roosevelts also had a dog named Scamp. In one of his letters to his children, President Roosevelt writes, "There is a very cunning little dog named Skip, belonging to John Goff's pack, who has completely adopted me. The dog most attributed to being one of the foundations for the Rat Terriers was a black-and-tan, mixed-breed, feist-type dog owned by the Roosevelts. When the types were separated by the Rat Terrier Club of America, the short-legged variety was named in honor of Theodore Roosevelt, although he never owned Rat Terriers nor was he instrumental in developing the Teddy Roosevelt Terrier.

Theodore Roosevelt's family, with terrier Teddy Roosevelt Terriers weighing as much as 25 lb (11 kg) or as little as 8 lb (3.6 kg) are not uncommon. The current UKC standard calls for a Teddy Roosevelt Terrier to be 8–15 in (200–380 mm) in height, with weight proportionate to height. Although they tend to be aloof with strangers, they are devoted companion dogs with a strong desire to please and be near their owners at all times. Maximizing the influences from these various breeds provides the modern Teddy Roosevelt Terrier with a keen sense of awareness and prey drive, an acute sense of smell. These early ratting terriers were then most likely bred to the Beagle or Beagle crossbred dogs (for increased scenting ability) and other dogs. The Feist (dog), Bull Terrier, Smooth Fox Terrier, Manchester Terrier, Whippet, Italian Greyhound, the now extinct English White Terrier, Turnspit Dog, and Wry-legged Terrier all share in the Teddy Roosevelt Terrier's ancestry.


Since the breed was a farm, hunting, and utility dog, little to no planned breeding was used other than breeding dogs with agreeable traits to each other to produce the desired work ethic in the dog. The Rat Terrier's background is said to stem from the terriers or other dogs that were brought over by early English and other working-class immigrants. Much diversity exists in the history of the Teddy Roosevelt Terrier breed, and it shares a common early history with the American Rat Terrier, Fox Paulistinha, and Tenterfield Terrier. It is lower-set, with shorter legs, and is more muscular with heavier bone density than the related American Rat Terrier. The Teddy Roosevelt Terrier is a small to medium-sized American hunting terrier. Type B, Short-legged Rat Terrier or Bench-legged Feist
