Teacup Dog is a purely descriptive term for a Toy dog which might, or might not, be smaller than the official size standard.
Whether the term is recognised or not people obviously like using it and regardless of varying Associations the phrases Teacup Dog or Teacup puppies are, no doubt, here to stay!
The Teacup Dogs Agility Association is open to all dogs, regardless of breed or pedigree, measuring 17" or less, and who are at least 12 months of age.
Toy dogs are also referred to as Pocket Size, Tiny Toy, Miniature, Lapdogs and Sleeve Dogs (Oriental Emperors and courtiers carried them around in their copious sleeves!).