The bee hummingbird is the world's tiniest bird, with males weighing between 1.6 and 2 grams and reaching 2 to 2.4 inches in length.
It is one of the tiniest mammals, weighing between 1.2 and 2.7 grams and ranging between 1.2 and 2.7 inches in length. It is also known as the white-toothed pygmy shrew.
Paedocypris is one of the smallest vertebrates known, measuring 7.9 to 10.3 millimeters in length. It is a Southeast Asian freshwater fish.
This little primate is located in Madagascar and weighs between 30 and 55 grams. It measures between 3.6 and 4.7 inches in length.
The speckled padloper is the world's smallest tortoise, weighing 95 to 165 grams and measuring 2.4 to 4.5 inches in length.
This little chameleon species is unique to Madagascar and measures only 1 inch in length, making it one of the smallest reptiles.
It is the world's tiniest bat, with a wingspan of roughly 5.7 to 6.1 inches and a weight of 1.5 to 2 grams. It is also known as the bumblebee bat.
The male fairy blue wren is a tiny bird found in Australia that measures about 5.1 to 5.5 inches in length.
This little mouse is found in Pakistan and Afghanistan, weighing about 3.75 to 4.5 grams and measuring 2.8 to 3.4 inches in length.
The slender blind snake is the world's smallest snake, measuring between 3.9 and 4.1 inches in length.