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Boidae
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<p>The Boidae, commonly known as boas or boids, are a <a href="/facts/Family_(biology)/qTrn6E8E">family</a> of nonvenomous <a href="/facts/Snake/YhA2gcn0">snakes</a> primarily found in the Americas, as well as Africa, Europe, Asia, and some Pacific islands. Boas include some of the world's largest snakes, with the <a href="/facts/Green_anaconda/1TyfLRVg">green anaconda</a> of South America being the <a href="/facts/List_of_largest_snakes/nG8bsl0C">heaviest and second-longest snake</a> known; in general, adults are medium to large in size, with females usually larger than the males. Six <a href="/facts/Subfamily/2QPtfDS4">subfamilies</a> comprising 14-15 <a href="/facts/Genus/m8EFjSms">genera</a> and 54-67 <a href="/facts/Species/oDg6b96r">species</a> are currently recognized. </p>