The cheetah’s body is made for speed. Ordinary cats weigh only 125 pounds. It has a small head, flat ribs and stovepipe to minimize air resistance. Hard feet and blunt, semi-retractable claws act as splints to help the foot maintain traction. The long tail acts as a rudder to manipulate and stabilize the cat. The cheetah’s spine is extremely flexible. Coupled with flexible hips and free-moving shoulder blades, the animal’s skeleton is a spring that stores and releases energy. When the cheetah moves forward, it spends more than half of all four paws on the ground. The cat’s stride is an incredible 25 feet or 7.6 meters. Running so fast requires a lot of oxygen. Cheetahs have large nasal passages and enlarged lungs and heart to help inhale air and oxygenate blood. When the cheetah runs, its breathing rate increases from 60 to 150 beats per minute. There are shortcomings so soon. Sprinting will greatly increase body temperature and deplete the body’s oxygen and glucose reserves, so cheetahs need to rest after chasing. The cheetah rests before eating, so the cat is at risk of losing competition. Because the cat’s body adapts to speed, it is thin and lightweight. Compared to most predators, the cheetah has a weaker jaw, smaller teeth, and its strength is not enough to fight. Basically, if the predator threatens to hunt the cheetah or attack its cubs, the cheetah must run.