 Also features is the "Walking with Lemurs" exhibit - a walkthrough enclosure allowing visitors to enter the territory of the ring-tailed and black-and-white ruffed lemurs (two of the five lemur species the zoo keeps).Here visitors can learn about the threats to the natural environment in Madagascar as well as getting close to these energetic prosimians.This zone is also home to Aldabra giant tortoises, one of the largest species of tortoises in the world.