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
Russkiy Toy lack of numbers and political isolation of the country at the time caused the creation of a new breed quite distinct from the former English style toy dog as breeders sought to stabilise the remaining toy sized terriers into a standard breed. The resulting contemporary Russian Toy has most of the features of the classic toy terrier, with the addition of some new characteristics. The head is high but not wide, the cheeks are flat and the eyes are round. By 1960, 76 dogs were entered into an exhibition and the first standard for the two Russian Toy varieties was