terrier

a breed of dog – several types or races of terriers:
1. wiry hair, smooth hair or short hair terriers
2. hunting terrier, show terrier and toy terrier
3. large and small size terriers

Originally from Great Britain and Ireland, the terrier breed of dog is bred for hunting animal pests, such as fox, otter, badger, rat, etc., living on ground, under ground or in water. There are about 44 (United Kennel Club) types of terrier breeds in the world (only 26 types are recognised by AKC, American Kennel Club).The size varies widely: the smallest being the Norwich terrier with 10 inches tall at the shoulder and 4½-5½ Kg. in weight; and the largest being the Airedale (terrier), also called ‘the king’, with 1½-2 feet tall at the shoulder and 20-35 Kg. in weight.

‘Kerry blue terrier’ and ‘Airedale’ are noted for their ability to track rats and otters even in deep waters!
American pit bull terrier is bred for illegal dog fight!!
1.
as white as a live terrier
2.
to stare like a terrier watching a rat
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