Toy dog term teacup dog, thus the toy/teacup boundary remains fuzzy. The standard size for a toy dog ranges from 4 to 7 pounds; anything smaller than the standard size of a toy dog may be a runt of a litter. No official size defines a teacup dog, but unofficially a teacup dog is considered to be a dog that is 17 inches or less and weighs 4 lbs or less at the age of 12 months. There are no specific teacup dog breeds, but popular types for breeding teacup dogs include: Shih Tzu, Chihuahua, Yorkshire Terrier, Poodle, Pug, Maltese, Pomeranian, and
American Standard of Perfection to the standard, which led to the term "standard bred" poultry. The first edition of the book listed 41 breeds, and today's versions have nearly 60. There are 19 classes of poultry recognized by the American Poultry Association. Eleven of these classes are devoted to chickens, of which six are classes of large breeds and five are bantam classes. There are four classes of ducks and three classes of geese, both divided by weight. All breeds of turkeys are grouped into one class. Standard: American, Asiatic, Continental, English, Mediterranean, and All Other Standard Breeds Bantam: Single Comb Clean Legged (SCCL),