The largest living tortoise. It can weigh over 200 kg and measure almost 2 m from head to tail. It is a very slow-moving animal, moving only 0.16 miles per hour. The Galapagos tortoise has a very large shell made of bone. The shell can be domed, saddle-backed, or somewhere inbetween. Domed shells are found on tortoises that live in areas with lush vegetation. Saddle-back shells allow the tortoise to reach vegetation higher off the ground. This shell is more common in areas with less vegetation.