Pražský Krysarík

Dog

The Prazsky krysarik (Prague Ratter) is a small breed of dog from the Czech Republic that is rarely seen outside its country of origin. It is the smallest breed in the world by breed standard, because of the maximum height of the dogs, unlike Chihuahua's who are measured by weight.

http://en.wikipedia.org/wiki/Pra%C5%BEsk%C3%BD_Krysa%C5%99%C3%ADk