The reticulated python, the largest snake in the world, measures 30 feet long. Pythons attack people only if they are surprised, provoked or protecting their offspring.
Pythons have four rows of teeth on top and two rows of teeth on their lower jaws. Their teeth curve backwards. Tens of thousands of Burmese pythons have lived in the Everglades National Park since the 1990s, and they are considered an invasive species. After scientists transported five Burmese pythons to locations up to 22 miles away, four of the pythons returned to within 3 miles of their original location. The snakes have an a internal compass or mapping system, but scientists are unsure whether the snakes follow celestial, olfactory or magnetic signals to help them navigate.