5. World’s Smallest Dog: 12.4 cm (4.9-inch) tall
At 1.4 pounds and 4.9 inches tall, Ducky, a yappy short-coat Chihuahua from Charlton (Massachusetts, USA), holds the Guinness World Record for the world’s smallest living dog (by height). Ducky succeeds Danka Kordak of Slovakia, a Chihuahua who measured 5.4 inches tall. The smallest dog ever, according to Guinness, was a dwarf Yorkshire terrier who stood 2.8 inches tall.
4. World’s Smallest Snake: 10.1 cm (4-inch) long
Leptotyphlops carlae is the world’s smallest species of snake, with adults averaging just under four inches in length. Found on the Caribbean island of Barbados, the species –which is as thin as a spaghetti noodle and small enough to rest comfortably on a U.S. quarter– was discovered by Blair Hedges.
3. World’s Smallest Fish: 7.9 mm (0.3-inch) long
On January 2006, the world’s smallest fish was discovered on the Indonesian island of Sumatra: a member of the carp family of fish, the Paedocypris progenetica. It is the world’s smallest vertebrate or backboned animal; only 7.9 mm (0.3 inches) long.
The title, however, is contested by 6.2 mm (0.2 in) long male anglerfish Photocorynus spiniceps (not technically a fish but a sexual parasite) and the 7 mm (0.27 in) long male stout infantfish Schindleria brevipinguis.
2. World’s Smallest Horse: 43.18 cm (17-inch) tall
The little horse was born to Paul and Kay Goessling, who specialize in breeding miniature horses, but even for the breed Thumbelina is particularly small: she is thought to be a dwarf-version of the breed. At just 60 lb and 17-inch tall, the five-year-old Thumbelina is the world’s smallest horse.
1. World’s Smallest Cat: 15.5 cm (6.1-inch) high and 49 cm (19.2-inch) long
Meet Mr. Peebles. He lives in central Illinois, is two years old, weighs about three pounds and is the world’s smallest cat! The cat’s small stature was verified by the Guinness Book of World Records on 2004.