While you're frying up some eggs and bacon, we're cooking up something else: a way to celebrate today's food holiday.

In case you missed out on National Grab Some Nuts Day back in August, lucky for you, October 22 is National Nut Day.

Most nut trees grow in warm environments, and a lot of nuts are native to the Southern Hemisphere. Here are five fun nut facts from the Australian tree nut industry group, "Nuts for Life":

- Ever wondered why you can’t find cashews sold in the shell? That’s because part of the shell contains urushiol, the same poison found in poison ivy.

- The first mention of hazelnuts can be dated back to a Chinese manuscript from 2838 BC.

- Brazil nuts are actually the seed of a very large tree found in the Amazon jungle, hence the name.

- Pistachios are the only (edible) nut that don’t need to be shelled before you roast them.

- Bitter almonds contain hydrogen cyanide. Luckily, the type of almonds consumed commercially isn't the bitter variety.