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Beyonce, a miniature puppy, who was born on 8 March 2012 after her mother, Casey, was taken off the streets of a California town, weighed less than 28.3 g at birth and could fit into a tablespoon. Her rescuers have submitted her to the Guinness World Records for a declaration as the world's tiniest rescue dog.Reuters 
A Pygmy Marmoset (Callithrix pygmaea) stands on the hand of a keeper at a primate rescue and rehabilitation center near Santiago. The Pygmy Marmoset, known as the world's smallest monkey and under danger of extinction, was confiscated after being found inside the clothes of a Peruvian citizen during a highway police check at the northern city of Antofagasta some 1367 km (849 miles) of Santiago.Reuters 
Guinness World Record's Smallest Living Dog, Boo Boo, is carried by its owner in its bag during a photo call in New York. Boo Boo, a Chihuahua, measures 4 inches (10cm) tall, 6.5 inches (16.5cm) long and weighs 24 ounces (680g).Reuters 
An endangered Southern Pudu, the world's smallest deer, is seen at The Wildlife Conservation Society's Queens Zoo in New York. The Southern Pudu, which is native to Chile and Argentina, doe was born at the zoo weighing one pound and could weigh as much as 20 pounds as an adult.Reuters 
A tarsier, a species among the world's smallest primates, hugs a branch after it was evacuated to a conservation centre at the tourist town of Lobok, Bohol.Reuters 
A litter of three-week-old 'tea cup poodle' puppies under 150 grams (0.3 pounds) sit in a mug cup and a food and water bowl at a Tokyo pet shop. The shop/breeder crossed small-sized toy poodles to breed the little dogs for the booming Japanese pet market. The dogs will become about 1.5 kilogrammes (3.3 pounds) in weight when fully grown.Reuters 
A romp of Asian small-clawed otters (Aonyx cinerea) gather near a stream in their enclosure at the Night Safari in Singapore. The smallest of the world's otter species are classed as being vulnerable in the wild, according to the International Union for Conservation of Nature (IUCN) Red List.Reuters 
A file picture shows a 'Brookesia micra' chameleon on the fingernail of a researchers hand in Madagascar. The so-called 'Brookesia micra' chameleon, believed to be the world smallest, has been discovered on the island of Madagascar, German and American biologists announced on February 16, 2012. The lizard, with a 16-millimetre body, measures 29 millimetres with its tail full extended.Reuters 
Taronga Zoo keeper Lana Langdale holds the world's smallest gliding mammal known as a Feathertail Glider as she prepares to feed it at Sydney's Taronga Zoo. The orphaned native Australian animal is taken home by Langdale every night and fed every 5 hours. Feathertail Gliders are found in forests and woodlands of eastern Australia and are the only small tree-dweller with a feather-like tail.Reuters 
Five-year-old boy holds "Flequillo" (bangs), a year-old genetically engineered donkey, touted as the "smallest in the world," at the Buenos Aires Zoo. "Flequillo" is 63 cm tall and weighs 12 kg and is smaller than a new-born donkey.Reuters
Apparently one does not know how many types of animals exist in the World. Even it is surprising to know there are hundred types of the same species.
Animals have made the records of being the largest as well as the smallest or tiniest on Earth. From 'chameleons' to 'deers', there are many such species who are the cutest and tiniest animals on earth, most of them are loosing their existence as well.
Check out the above slideshow of world's 10 tiniest animals.
