The smallest dog breed in terms of height is the Chihuahua, standing only 5-8 inches tall when full grown.
Chihuahua
Though small at 9-11 inches tall, Affenpinschers have a big dog attitude and confidence beyond their size.
Affenpinscher
Another spirited toy breed is the Brussels Griffon, measuring 7-10 inches tall and weighing 8-15 pounds as adults.
Brussels Griffon
With its plumed ears and dainty frame of 8-11 inches tall, the Papillon retains a puppy-like appeal its entire life.
Papillon
Elegant Japanese Chins grow to a petite 8-11 inches tall and resemble ornate ceramic statuettes.
Japanese Chin
Though considered a toy breed at 7-9 inches tall as adults, Yorkies possess true terrier grit.
Yorkshire Terrier
The popular Pomeranian measures just 6-7 inches in height but has a huge personality like its ancestors sled dogs.
Pomeranian