Why might land-based snakes (crotalids) have a different venom composition than that of elapids or sea snakes?

Question

Quizplus · Accepted Answer

The Answer is Note that the hemorrhagic venoms are usually found in the crotalids. This may be due to the nature of the organism against they may be defending themselves (buffalo or other thick-hide animal with fur that may need factors that increased penetration of the venom) versus the more neurotoxic venoms found in elapids and sea snakes. Digestion is also a factor that may affect venom composition.

Why Might Land-Based Snakes (Crotalids) Have a Different Venom Composition