(Boa constrictor)
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Boa constrictor   The largest, most robust snake of Mexico, reaching up to 3m in length. Tail is short, only about 20% of SVL (snout -vent length). Head is distinct from the neck, and roughly triangular when viewed from above. There are more than 50 rows of scales on the upper surface at mid- body section.
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  Boa constrictor imperator
Puerto Vallarta, Jalisco
© Petr Myska

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