Under ultraviolet light there are three species of flying squirrels that glow sort of various shades of very bright pink. When Jonathan's flying squirrel glows pink under ultraviolet light, it's not that it's somehow generating the pink light. It's that ultraviolet light is being absorbed, stretched out, and emitted as wavelengths we can see.
An accidental discovery on a nighttime walk led one scientist and his team to wonder: How many mammals glow under ultraviolet light? The list keeps growing, but scientists still aren’t sure why these furry creatures glow.
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