Belly button lint is made of clothing fibers, hair, and dead skin cells

Likes

More Like Discover

They’re big, bulky and can deliver one serious chomp!

Join us on an exciting adventure to East Asia!

Check out 10 top facts about our universe!

Discover the fossil hunter whose discoveries changed the world…

Type whatever you want to search

You’re leaving natgeokids.com
to visit another website!

Ask a parent or guardian to check it out first and remember to stay safe online.

You're leaving our kids' pages to visit a page for grown-ups!

Be sure to check if your parent or guardian is okay with this first.