
Thailand has several varieties of cobra, including the Spitting Cobra (pictured below), and the larger King Cobra (pictured above).
Spitting Cobra refers to any one of several species of cobras that have the ability to spray the venom, using muscular contractions upon the venom glands. When cornered, they can “spit” their venom up to two meters. While spitting is their primary form of defence, all spitting cobras are capable of delivering venom by a biting as well. Most species’ venom exhibit both hemotoxic and neurotoxic effects.
When spit, the venom is harmless to skin, but can cause blindness if left untreated after coming into contact with eyes.
King Cobras are the largest venomous land snakes, with some growing in excess of 5m in length. Its venom is a neurotoxin, with a mortality rate as high as 75% in humans, but most bites involve nonfatal amounts. The King Cobra feeds almost exclusively on other snakes, including other cobras (but rarely it’s own species). Fortunately it is generally a shy and reclusive animal, avoiding confrontation with people as much as it can.
When it feels threatened the King Cobra lifts approximately a third of its body off the ground, makes a hood, and hisses loudly. A full-grown King Cobra is actually able to look a standing human directly in the eye. This is time to take the snake’s advice and back off.

Cobra Information
Cobras.org - Excellent resource, very informative.
Spiders, Snakes & Centipedes