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Q: How does snake venom work?
A: Snake venom is purely a food-getting mechanism. It is not a defense. It is a way of immobilizing prey. In the case of vipers and their relatives, the venom pre-digests the usually large-bodied prey from the inside. In the case of cobras, the venom is a paralytic.
More about Dr. Drewes
Current Expedition: Gulf of Guinea Islands: São Tomé and Príncipe
Fascinating Frogs »
Herpetologist Bob Drewes explains how their aquatic youth and terrestrial adulthood give frogs the distinction of being an indicator species.
Frog Sounds »
Knowing frog sounds is the key to identifying the different species of frogs, observes herpetologist Bob Drewes.
Selected Articles and Publications: