Pythons and boas are constrictors - snakes which kill their prey by suffocation rather than with venom. Pythons lay eggs whilst boas bear live young.
Scientific name: Boidae
The shading illustrates the diversity of this group - the darker the colour the greater the number of species. Data provided by WWF's Wildfinder.
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The Boidae are a family of nonvenomous snakes found in America, Africa, Europe, Asia, and some Pacific Islands. Relatively primitive snakes, adults are medium to large in size, with females usually larger than the males. Two subfamilies, comprising eight genera and 43 species, are currently recognized.
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