“For healthy individuals, rattlesnake bites aren’t usually fatal.”
I don’t recommend testing your thesis...
No question that getting bit is a traumatic experience. And the part about mostly non-fatal applies to people who get timely medical care. According to one doctor, the venom is also getting more deadly.
Their venom is extremely potent. “The venom of most rattlesnake species is composed mainly of hemotoxins,” Viernum said. “Symptoms include temporary and/or permanent tissue and muscle damage, loss of an extremity depending on the location of the bite, internal bleeding, and extreme pain around the injection area.”
Some rattlesnake species have venom that contains neurotoxins. “Mojave, tiger, and speckled rattlesnakes are examples of rattlesnakes where either the entire species or certain populations within the species produce neurotoxins,” said Viernum. She explained that neurotoxins act faster than hemotoxins and attack the nervous system. “Symptoms from a neurotoxic rattlesnake bite include problems with vision, difficulty swallowing and speaking, skeletal muscle weakness, difficulty breathing, and respiratory failure.”
Nevertheless, Viernum reinforced the idea that fatalities from rattlesnake bites are rare if treated in a timely manner.
According to DesertUSA, there is some evidence that rattlesnake venom is becoming more neurotoxic across the board, which may be an evolutionary strategy, as some rodents are evolving to be more resistant to hemotoxins.