Depending on the size class and strain the dog belongs to, a rat terrier can grow up to 19 inches at the shoulder and weigh up to 40 pounds. The AKC breed standard for show dogs requires them to be under 18 inches in hei... More »

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Trench rats were a huge problem during World War I. During this time, they infested every trench line in the war from the eastern to western fronts. The rats carried diseases that weakened and killed soldiers in the tren... More »

The Gambian pouched rat is the largest known rat species, reaching lengths of up to 3 feet. Their average weight is between 3 and 4 pounds, although they can weigh up to 9 pounds. More »

Jack Russell-rat terrier mixes, also called Jack rat terriers, are affectionate, independent and courageous dogs. They are small, hybrid dogs in the terrier breed. They only grow as tall as 18 inches at the shoulder and ... More »

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The toy rat terrier is a rare breed, however, theAKC website has a listing of breeders who breed toy rat terriers and standard size rat terriers. These breeders often have puppies available on a regular basis for potenti... More »

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Miniature rat terriers, according to the American Kennel Club breed standard for the rat terrier, stand at least 10 and no more than 13 inches tall at the withers, the space between the shoulder blades. They have straigh... More »

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Boston terriers are small, short-haired dogs that weigh up to 25 pounds. They have black and white or dark brown and white "tuxedo" coats. Some Boston terriers also have brindle patterns, or faint, multicolored stripes o... More »

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