World's Only Nest-Building Snake: Amazing King Cobra Facts Every Wildlife Lover Should Know

The king cobra is the world's only snake species known to build a nest for its eggs.

The female king cobra builds a large nest from dry leaves and twigs, lays 20 to 40 eggs, and guards it for weeks.

Decaying leaves in the nest generate heat that helps the eggs hatch faster.

The female leaves the nest just before the babies emerge, as they are venomous and self-sufficient from birth.

The king cobra is the world's longest venomous snake, growing up to 5.5 meters (about 18 feet).