These tiny dudes are one of a kind.
Leptotyphlops carlae is the world's smallest snake, with adults averaging just under four inches in length.
Discovered on the Indonesian island of Sumatra, a member of the carp family of fish, the Paedocypris progenetica, is the world's smallest vertebrate or backboned animal; only 7.9 mm (0.3 inches) long.
World’s Smallest Horse: 43.18 cm (17-inch) tall
World’s Smallest Cat: 15.5 cm (6.1-inch) high and 49 cm (19.2-inch) long
World's Smallest Hamster: 2.5 cm (0.9-inch) tall
World's Smallest Chameleon: 1.2 cm (0.5-inch) long
World's Smallest Lizard: 16 mm (0.6-inch) long
World’s Smallest Cattle: 81 cm (31-inch) height
World's Smallest Seahorse: 16 mm (0.6-inch) long
World's Smallest Bird: 5cm (2-inch) long