While there are numerous arboreal boas, tree boa most oftens refers to the
genus Corallus. This genus contains about seven
species, though
taxonomic re-arrangements are common. All species are long, slightly laterally flattened, with thin bodies and large
heads. They typically have large
eyes (though this is less pronounced in large species like the Emerald tree boa, Corallus caninus), boxy heads, and highly elongated anterior
teeth, which are often several times the length one would expect for a snake of their size. These huge teeth can penetrate layers of
feathers to get a firm grip on
birds, their primary prey. All members of the genus are highly
nocturnal, and have large numbers of very pronounced
heat-sensing pits along their
lips.
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