These hatchlings weigh around 4 ounces. The largest pythons are always female. They can grow from 13 to 20 feet while the typically smaller males grow from 8 to 17 feet. However, most Burmese pythons in general grow to a length of around 8 feet. In males the anal spurs on each side of the cloaca are much more developed than in females.
Females often have different coloration and a smaller head relative to the body.
It is not known how long that a Burmese python will live in the wild for they have not been marked. Pythons are constrictors, therefore they don't have fangs and they are non-venomous. They have back-curving teeth which seize the animal and don't allow them to escape. Because the snake's body is long and thin, the organs are long and thin also. Snakes usually only have one thin lung.