How Big are Snakes?

The world’s smallest snake is about 5 inches (about 13 centimeters) long at full growth and weighs less than 0.1 ounce (less than 2 grams). The largest snakes are the anaconda and the reticulated python. They both can grow as long as 33 feet (10 meters) and can weigh up to 550 pounds (250 kilograms).