A new tiny species of chameleon (Brookesia micra) was recently discovered in Madagascar. The scientists who discovered the animal speculate that it is likely at the lower limit of size for a vertebrate with complex eyes. Shown in the image above is a juvenile.
At a little over half an inch, the chameleon loses out on being considered the world’s tiniest vertebrate. This record is currently held by a recently discovered teeny frog (equally adorable at an average length of 0.3 inches) that was found in a pile of leaves in Papua New Guinea. You can see a photo of the frog here.