What might be the worlds smallest dog

http://www.dogonews.com/2009/4/6/this-cutie-may-be-the-world-s-smallest-dog
In West Dunbartonshire, Scotland Susan and Archie Thompson own a four inch tall and three oz dog called Tom Thumb. Tom Thumb might set a new world record for being the smallest dog. His mother is a Chihuahua named Spice. His father is a Jack Russell named Oosie.