The biggest king cobra is the Ophiophagus hannah, or Thailand king cobra. This snake is the largest venomous snake in the world. It grows to almost 19 feet in length and is found all over Thailand and Southeast Asia. It mostly eats other snakes, as well as other animals.
The Thailand king cobra lives in many different types of habitat, such as dense forests near water bodies, mountains and open grasslands. It builds nests in bamboo thickets and hides in them. It is active during both day and night. The Thailand king cobra's venom is very deadly; a person can die within 10 to 20 minutes after being bit.