The island of Madagascar is a living laboratory of evolution - isolated from the rest of the world for over 60 million years. The tropical dry forests in the western part of the island support hundreds of endemic plant and animal species, including numerous chameleon species, the world’s most endangered tortoise, the Angonoka tortoise, and the rare aye-aye. There are 7 species of baobab trees as compared to only one in all of Africa.