The giraffe is a herbivorous mammal with one heart. The giraffe's heart measures about two feet and weighs approximately 25 pounds. Giraffes have many other large physical features.
Their necks and legs span about six feet long, and their incredible mass is well-supported by feet that measure a foot wide each. The giraffe's neck is of great help in reaching the tops of trees that are largely untouched by other animals, and their lengthy tongue of over 20 inches makes lofty food sources even more accessible. Giraffes require less than half an hour of sleep a day, allowing them to be almost constantly on the lookout for threats. These mammals enjoy company, often being seen in groups, called towers, of about 15 giraffes.