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
Bulldog breeds an extinct or nearly extinct type of dog. These include: Bulldog breeds Bulldog breeds is a collective name for various breeds of dog of a particular type, also known as bull breeds. The blood sport of dog-baiting animals has occurred since antiquity, most famously in the Roman Colosseum, a direct precursor to the modern Spanish sport of bullfighting. In the post-Roman era, baiting, per se, was most closely associated with the English, who pursued it with utmost earnestness. The pastime flourished, reaching the peak of its popularity during the sixteenth century. The Bullenbeisser, also known as the "German Bulldog", was