MOJAVE GREEN rattlesnakes are especially dangerous to those suffering from respiratory diseases, such as asthma. Fortunately these snakes are not plentiful. Every one we have encountered over the past 45 years has made numerous efforts to escape, and has coiled and struck only when molested. Special caution is appropriate as their venom is a neurotoxin which may not take effect for several hours after the bite has occurred. For the most part, if you leave them alone, they will return the favor. Notice the ruler at the top.