Lonesome George, the single living specimen of Geochelone elephantopus Abingdon, also known as the Pinta Island giant tortoise, makes it the world’s rarest reptile. This species of giant tortoise is endemic to the Galapagos Islands and is believed to have been extinct since the late 19th century. However, in 1971, a single individual was discovered on the island of Pinta, and since then, it has become known as Lonesome George.