The American Alligator has webbed feet, up to 80 teeth, webbed teeth, eyes and nostrils are on the top of their heads, hard and green bony plates that covers their body, sharp claws that are used for digging nest, and the edge of the upper jaw overlaps teeth in lower jaw. The American Alligator can reach up to 15 feet long, but when they are first born they are about eight inches long.. Most of the adult alligators are 10 feet long; the female alligators are smaller than the males. The average weight of an American Alligator is 1000 pounds. The American Alligator inside organs consist of esophagus, trachea, heart, stomach, intestine, brain lung, liver, spleen, testis, kidney, and cloaca. The alligator heart consists of four chambers. The four chambered heart separates oxygenated and deoxygenated blood. The result of the four-chambered heart makes it more efficient for the alligator respiration and allows the alligator to swim for longer periods. The alligator’s body is covered with bony plates called osteoderms or scutes. The color of the skin is usually black and their color helps them stay hidden while they are looking for their prey. The tail of the alligator is muscular and is used for locomotion and steering in the water. Every time the alligator looses a tooth it is automatically replaced by a new tooth. On the alligator’s snout are the upturned nostrils. The upturned nostrils allow the alligator to breathe normally while the rest of the body is submerged in the water. The alligators have four short legs and they are webbed. The webbed feet are used as paddles in the water.