Chihuahua

Who can resist that face? The Chihuahua is the smallest dog breed in the word with some reaching only four inches tall. These dogs gained popularity when Paris Hilton notoriously carried one around in her purse on the red carpet. The smallest living dog in the world is a Chihuahua named Boo Boo, according to the Guinness Book of Records.
This Post Belongs To World's Smallest Animals