Costa Rica Wildlife Guide
72 species across birds, mammals, reptiles, amphibians, butterflies, and insects. Filter by category, region, or elevation.
Catalog expanding — Michael adds species after each tour.
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Showing 72 of 72 species
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Bushmaster in Costa Rica
Lachesis stenophrys
Pit Vipers · ~300 cm · lowland
CaribbeanOsa
The largest pit viper in the world. Reaches over 3 meters in length. Reclusive and seldom seen — even most veteran CR guides have only encountered a handful.
Fun Facts
- ▸World's longest venomous snake outside of cobras — can exceed 12 feet.
- ▸The only New World pit viper that lays eggs rather than giving live birth.
- ▸Found only in untouched primary forest — a true indicator of intact rainforest.
Best Months
Year-round (extremely rare)
Featured On
- · Custom Osa Peninsula Wildlife
