A tiny new species of chameleon has been discovered, and it seems to be the smallest reptile in the world. Known as Brookesia nana, or the nano-chameleon, the petite species can perch on a fingertip and may have the smallest adult males of any vertebrate.

But biogenic fluorescence is rare in terrestrial vertebrates. Only in March was the first fluorescent frog discovered in the Amazon. On January 15, a team of German researchers published a paper showing that the bones of chameleons glow under UV light.