Bats range in size across various species; they tend to average about 5.5 to 19 cm in length (tip to tail) with a wingspread of around 15 to 38 cm. Most weigh between 3.5 and 60 grams (in the U.S.). Bats’ bodies are concealed with hair differing in color from tan to black. Their wings stretch across elongated arm and finger bones.
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