What percent of bites are dry bites (no venom injected)? Can all venomous snakes deliver a dry bite?
Venom delivery is voluntary — snakes squeeze their venom blands with muscles to deliver venom. All venomous snakes could deliver dry bites. Estimates show that 20-25% of all pit viper bites and 50% of Coral Snake bites are dry bites. Occasionally, the venom may be prematurely expelled from the fangs before they puncture the skin, which can also result in a dry bite.