The animal on the cover of Programming Flex 3 is a krait snake. The krait (Bungarus
caeruleus) is one of the deadliest venomous snakes in the world. Its native habitat is
limited to Asia, and it's nocturnal. The snake's bands are white or yellow on a blue/
black body. A krait's head is narrow and it can grow to nearly three feet in length.
Fairly common in the fields and jungles of India, Pakistan, and Sri Lanka, the krait is
also known to seek shelter in human encampments. It's fond of hiding out in sleeping
bags, footwear, and piles of clothing or rags. Its venom contains a neuro-toxin that
causes respiratory failure. Victims often feel little pain from the bite itself, but the death
rate of victims is 85 percent without administration of anti-venom, and nearly 50 percent
even when medication is available.
The 2006 film Snakes on a Plane features a snake smuggler named "Kraitler." The krait
also makes an appearance in several Sherlock Holmes stories.