![]() Most large boa species measure anywhere from 4 to 12 feet (1.2 to 3.7 m) depending on the species and gender, the only. When it comes to size both snakes have been considered the biggest snake in the world, depending on how they are categorized. The green anaconda grows to be the heaviest snake whereas the reticulated python grows to be the longest snake in the world.īut even these giants are dwarfed by the extinct Titanoboa ( Titanoboa cerrejonensis), which measured a whopping 42 feet (13 meters) and weighed about 2,500 lb (1,135 kg ). Boas on average are smaller than pythons. These giants include the invasive species mentioned before, the Burmese python, the African rock python and the reticulated python. The researchers think that the levator costa muscles are integral to snakes' ability to selectively engage ribs, and that this likely developed very early in snake evolution. Whereas pythons have several "giant" species reaching more than 20 feet (6 meters) in extreme cases. The boa constrictor is a large snake, although it is only modestly sized in comparison to other large snakes such as the reticulated python and Burmese. Most large boa species measure anywhere from 4 to 12 feet (1.2 to 3.7 m) depending on the species and gender, the only "giant snake" in the boa group is the green anaconda capable of reaching more than 20 ft in length. The female after laying the eggs, incubates them to keep them warm.īoas on average are smaller than pythons. The pythons are oviparous snakes, meaning they lay eggs. The maps below show the area of the country that the scientists believe is ultimately suitable for each species. Most species of boas are ovoviviparous snakes meaning they are born as live hatchlings from eggs incubated inside their mother. They are the Burmese python and the Boa constrictor. Most python species heat-sensing pits along the lips, these specialized organs enable them to detect tiny differences in temperature, allowing these snakes to hunt down warm-blooded prey, such as mammals and birds. They both have tiny vestigial limbs a remainder of their legged ancestors, that can be seen today as small "spurs" near their tail. Both snake species also have 2 lungs, although most snake species have only 1 lung. Boas also have fewer teeth when compared to pythons. In pythons, we find a pair of upper jaw bones called the “premaxilla” that also have teeth. The bones found in the head of boas are distinct from other snake species like pythons since they have fewer bones. Pythons are exclusively Old World snakes, found in Africa like the ball python, Australia like the carpet python and olive python, and Asia.īut they were accidently introduced to North America, and since the 1980's the Burmese python, African rock python and the reticulated python are considered an invasive species in the Florida Everglades. But a few species live in Africa and islands such as Madagascar, Fiji and Reunion Island. Most boa species live in the western hemisphere, in central and South America like the boa constrictor, emerald tree boa, or the Brazilian rainbow boa.
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