By John Smedley/StocksyA few years ago, my wife and I were trying to create our own venom.

The problem was, we had no venom to go with the snakes.

We found one that was made from a local tree, but we could not find any in-store supplies.

So we came up with our own.

We got the snakes, and we made our own!

You can find more venomous plants and animals at the Smithsonian Tropical Research Institute and the National Zoo.

You can also learn more about the evolution of venomous reptiles at the U.S. Geological Survey.