There’s one particular thing that makes the South American polka dot tree frog (also known as Hypsiboas punctatus) different from all the other 7,600 amphibian species on Earth.
It’s naturally fluorescent.
According to scientists in Brazil and Argentina , the little critter produces a certain pigment that, when hit with black light, changes to a bright neon glow.
Fluorescence is known about in various marine creatures – such as sharks and turtles – but we’ve never seen it on a frog before. It’s not the same thing as bioluminescence which occurs when a creature generates light through