Snakes usually have only one lung, but the python has two, one of which is much smaller than the other.
The Burmese python Python bivittatus is the largest subspecies of the Indian python and one of the six largest snakes in the World. They are capable of reaching 23 feet or more in length and weighing up to 200 pounds with a girth as big as a telephone pole.The body of a Burmese python is longer and thinner than the anaconda’s. Because the body is long, the organs are also long. Pythons are constrictors, so they don’t have fangs. They do have back curving teeth that grab the prey so it can't escape. Prey is then swallowed whole. The jaws separate and allow the snake to take in an animal four to five times as wide as its own head.
They are also excellent swimmers, and can stay submerged for up to 30 minutes before surfacing for air.