Recently, some miniature sheep have been advertised for up to $450 — probably more expensive than well-bred stud sheep — so be careful when buying to ensure animals are sound and healthy.

The smallest breed is known to be the Ouessant sheep. Other miniature breeds include the Babydoll Southdown, Harlequin Mini Meat, American Mini Cheviot and Shetland.

Miniature baby doll sheep may be the cutest breed of sheep in existence. They're useful, too--Peter Yealands, a New Zealand winemaker, is using the rare breed (only 300 are left) to cut down on ...