One of the rarest species found on the Galapagos Islands is the pink land iguana, Conolophus marthae, which lives in a stretch of 25 square kilometers on top of the Wolf Volcano on Isabela Island. It is said that this species has split from other land iguanas for over 6 million years. Unfortunately, researchers claim that the small numbers of this unique iguana renders them seriously threatened.
10. Pebble Toad - Venezuela
The highlands of Venezuela, where the flat-topped mountains (tepuis) form isolated islands in the clouds, is home to the tiny, rough-textured Pebble Toad, Oreophrynella nigra. This toad species has one bizarre defense mechanism it uses when being attacked by a predator (such as the tarantula) - it shapes its body into a ball and rolls downhill, bouncing away from danger a loose stone.