Summary: The size of a king cobra depends somewhat on their region of origin, but the largest king cobra on record reached more than 18 feet. Learn more about king cobras, which average 12 to 14 feet in size, with help from an advanced certified animal control officer in this free video on king cobra snakes.
"My name is Tim Cole, I am the owner of Austin Reptile Service. And we are going to answer the question: How long do king cobras grow? Well, some of that depends on the locality of where they come from, because they range all the way from India to China, and south to Malaysia. And some of the locales are known to get bigger than others. For instance, the Malaysian king cobra is the largest locale, and the Chinese king cobra is probably the smallest. The record for a king cobra is just over eighteen feet, and that is also the record for the largest venomous snake in the world. Most of them probably average twelve to fourteen feet, but occasionally you will see one in the zoo that might be bigger than that. King cobras do not have a very large hood compared to some of the other species of cobras. King cobras are also primarily snake eaters, whereas a lot of other species of king cobras, or other cobras, will feed on rodents. And this is fielding the question for how long king cobras get."
eHow Article: How Long Can a King Cobra Grow?