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
Miniature Fox Terrier and organised as the Tenterfield Terrier Club of Australia (1993), a name which was first used by a television personality of that era. The ensuing breed standard for the Tenterfield Terrier differs in substance from that of the Miniature Fox Terrier, and though the two dogs are sometimes confused, they have been developing along divergent lines for over twenty years and are now different breeds. Some years ago the ANKC placed a moratorium on the registration of any MFCA-registered Miniature Fox Terrier as a Tenterfield Terrier. MFCA registered pedigrees are protected by Australian Copyright Law. The breed is not recognized