How many kinds of venom do snakes produce?

There are two types of snake venom.

    + There is the neurotoxic venom produced by snakes such as cobras. This type of venom affects the nervous system, paralyzing the victim and leading to a quick death.+ Then there is the hemotoxic venom produced by snakes such as the viper. This one affects the blood and organs but does not kill immediately. As a result, doctors sometimes have a chance to treat the victim.