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The World's Three Smallest Mammals (Photos)

Endothermic, hairy, and lactating, mammals are the only type of vertebrate animal. Mammals have adapted to practically every habitat on Earth thanks to their ability to maintain a constant internal temperature and their varied protective hair coats. 1 The bumblebee bat The bumblebee bat (Craseonycteris thonglongyai) is the smallest animal on Earth, weighing in at only about 2 grams and reaching just 1 to 1.3 inches in length, according to the BBC.

  4 months ago ago
The World's Three Smallest Mammals (Photos)