registries, where they are simply designated as Rat Terriers. . Appearance The Teddy Roosevelt Terrier is a low-set, muscular, active, small- to medium-sized hunting terrier. The preferred ratio of length of body (prosternum to point of buttocks) to height (withers to ground) is between 10:7 and 5:4. The head is broad, slightly domed, wedge-shaped, and proportionate to the size of the body. Ears are V-shaped, set at the outside edges of the skull, and may be erect or button. A docked tail is preferred, but a natural bob tail or a natural tail carried in an upward curve is also acceptable. The Teddy Roosevelt Terrier occurs in solid white, other solid colors with markings, and white with a variety of colored patches. The Teddy Roosevelt Terrier should be evaluated as a working terrier, and exaggerations, or faults, should be penalized in proportion to how much they interfere with the dog's ability to work. Honorable scars resulting from field work are not to be penalized. Disqualification: A longer-legged, square-bodied dog, whose proportions vary significantly from the desired ratio, lacks breed type, and must be disqualified. Common characteristics Like the Rat Terrier, the Teddy Roosevelt Terrier of today is bred for versatility, including hunting instincts, soundness of health, great temperament, and good looks. Teddy Roosevelt Terriers have higher than average prey drive and will chase squirrels, rats, stray cats, and any other animals they consider prey. They also dig and follow mole trails, leaving an array of trenches and holes behind. They make excellent watch dogs, and can be very protective and territorial. They share a love for their families and become very attached, craving human interaction and affection. Always by their owners' sides, they become constant shadows, following their masters around throughout the daily routine. These dogs are very smart and loyal, which makes them easy to train. They are energetic and playful, and their antics can make one laugh daily. However, when it is time to settle down, they are just as content to be in a lap. They can adapt to almost any lifestyle, whether shown in conformation rings, working in agility trials, or just a great companion for home or farm. Their size makes them suitable for apartment living, as well. Today, the Teddy Roosevelt Terrier is gaining a solid following and becoming a popular household companion.(Source AKC) Health problems Less common problems may include allergies, bite problems