Elephants live in Africa and Asia. They are the largest and most powerful of all land mammals reaching heights up to 13 ft and weighing up to 14,000 lb. They eat about 500 lb of grass, foliage and other vegetation a day. They can also drink about 36 gallons of water at a time. Elephants have a long lifespan, living up to 70 years old. Their tusks are actually ivory teeth that continue to grow throughout their lives.