Pythons 101 | National Geographic

Few predators on Earth evoke as much fear and fascination as the python. Among the world’s longest snakes, the reticulated python of Southeast Asia typically reaches lengths of around 16 feet, with the current record holder measuring an astounding 25 feet. These reptiles use their elongated bodies to kill through constriction, wrapping around their prey and tightening their grip each time the prey exhales, ultimately disrupting respiration and blood flow, leading to death.

Physical and Evolutionary Traits

Interestingly, pythons possess vestigial limbs known as spurs, appearing as small bumps on either side of their pelvis. These remnants, along with the pelvis itself, are evolutionary leftovers from when pythons evolved from lizards approximately 100 million years ago. One potential early ancestor, the tetrapodophis, exhibited both lizard and snake characteristics, including hind legs. Remarkably, pythons still retain the genetic mutation for limb growth, suggesting the potential for fully functional legs in the future.

Contrary to popular belief, pythons do not unhinge their jaws when consuming prey. Instead, their jaws rest on a multi-hinged joint that provides exceptional flexibility, enabling them to swallow large prey. The lower jaw consists of two bones connected by an elastic ligament, allowing significant stretching to accommodate prey two to three times wider than the snake’s head.

Unique Feeding Mechanisms

Pythons’ skulls have a unique ability to “walk” over their prey using six rows of teeth—two in the lower jaws, two in the upper jaws, and two on the roof of the mouth. This process, known as cranial kinesis or the pterygoid walk, allows each row of teeth to move independently, pulling the prey into their throats without needing front limbs. These teeth are extremely sharp and curve backward, perfect for catching and holding onto prey.

Pythons as Invasive Species

Native to the tropics of Africa, Asia, and Australia, some python species have become invasive in other parts of the world, notably in the United States. Pet trafficking has led to the introduction of Burmese pythons into Florida’s Everglades National Park, where tens of thousands now reside. Due to poor care, neglect, and accidents, many of these pythons, initially kept as pets, have escaped or been released, leading to the predation of native wildlife, pets, and even posing risks to children.

Pythons in Their Natural Habitat

In their natural environments, pythons are typically docile creatures. Their remarkable hunting adaptations—their long bodies, powerful constricting method, and skulls designed for consuming large prey—make them some of nature’s most formidable predators. These traits inspire both awe and fear, underscoring the incredible nature of these reptiles.

 

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