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Which bat species is one of the smallest mammals in the world?

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The hog-nosed bat, also known as the bumblebee bat (Craseonycteris thonglongyai), is one of the smallest mammals in the world. Found in Thailand, this tiny creature has a wingspan of approximately 15 cm (6 inches) and weighs about 2 grams (0.07 ounce).12

While the extinct genus Batodonoides—specifically the species Batodonoides vanhouteni—may have been even smaller, the bumblebee bat remains the smallest living bat species.2