Elephants are large gray mammals that can weigh up to 16,000 pounds. They use their trunks to grasp food, drink water, and communicate. Male elephants have tusks made of ivory that they use for digging and fighting. Elephants live in herds led by females and eat plants, drinking up to 200 liters of water per day. Both African and Asian elephants are endangered due to habitat loss and poaching for their ivory tusks.