In India, we have what is called the big 5 (previously known as big 4). The 5 snake species known for statistically having highest number of kills.
The snakes are
1) Russell’s Viper
The Russell’s Viper had the highest number of kills in India.
Adults are reported to be slow and sluggish unless pushed beyond a certain limit, after which they can become very aggressive. Juveniles, though, are generally more nervous. For humans the lethal dose is about 40–70 mg.
2) Common Krait
Common Krait has more number for bite cases than Russell’s Viper and is known to climb walls.
During the day this snake is mostly sluggish and docile and hides in rat or rabbit jokes. It is known to be aggressive during the night.
Venom is primarily composed of neurotoxins and the common cause of death after bite is suffocation or respiratory failure.
3) King Cobra
King cobra is a symbol in many religious and folk traditions throughout the Indian Subcontinent.
It is a highly venomous and dangerous snake when agitated or provoked that has a fearsome reputation in its range, although it is typically shy and avoids confrontation with humans when possible
The king cobra’s venom consists of cytotoxins and neurotoxins, including alpha-neurotoxins and three-finger toxins. Other components have cardiotoxic effects.[5The toxins affect the victim’s central nervous system, resulting in severe pain, blurred vision, vertigo, drowsiness, and eventually paralysis.
4) Saw-Scaled Viper
Sub-species of the Saw-Scaled Vipers are responsible for must snakebite cases atoms the world. Saw-Scaled Vipers are relatively small snakes even the largest ones are about 1 feet long.
They are named such because of serrated keels on their scanned which they rub together to form a sizzling warning sound.
The snake venom of Echis species consists mostly of four types of toxins: neurotoxins, cardiotoxins, hemotoxins, and cytotoxins. The genus is recognized as medically significant in many tropical rural areas.
5) Hump-Nosed Pit Viper
Hump-Nosed Pit Vipers are endemic to India and Sri Lanka.
While not initially included in the list of highly venomous snakes in Sri Lanka, it is now considered highly venomous, and one of the medically important venomous snakes in Sri Lanka and on the south western coast of India.