Submit your questions for snake handler Thea Litschka-Koen, featured in Black Mamba. During the week of November 9, Thea will answer your questions here.

Take a look at the reptiles that humans may fear most: Snakes. Look into their secret and very strange world to try to understand them better.

Snakes are often hated and feared. But there are good reasons to keep them around your home or garden. They can keep pests, such as rats and mice, in check.

Scientists use venom to develop antivenoms, and the toxic compounds may also yield new drugs to treat everything from crippling strokes to deadly heart attacks.

Procedures for teachers using the "Sizing up the Supersize Croc" lesson plan, based on NATURE's "Supersize Crocs."

"The Reptiles: Alligators and Crocodiles" looks at the ultimate predators at the margins of the water and the land.

View additional resources, online and in print, for NATURE's "The Reptiles: Lizards."

They look so cool on TV, and now you may want to bring one home. But be careful -- caring for a pet lizard can be a difficult chore.

NATURE's "The Reptiles: Lizards" explores the world of the great escape artists of the wild, and looks at their remarkable bag of tricks.