The largest king cobra is about 30 pounds.

The king cobra is a large snake with a record of 3,806mm in total length in China and 5,580mm outside of China. The king cobra is also the longest venomous snake among all venomous snakes.

The back of the king cobra is dark brown, and the nape has a ∧ Shaped yellow-white markings without spectacled spots; narrow white stripes with black borders on the back of the trunk and tail. Body ventral gray-brown, with black linear markings. The markings of juvenile snakes are different from those of adults, mainly yellow and white stripes on the back of the snout and in front of the eyes, and black body with more than 35 light yellow or white stripes.