Your Paw-some Question | What determines the size and shape of someone's belly button?
Ask Dr. Universe | Jun 26 2026 | 00:03:45
Cosmo and I investigated belly buttons—thanks to WSU nursing professor Cindy Brigham-Althoff.
- Learn more about the placenta with Operation Ouch and Scientific American
- Check out all the belly buttons with Nat Geo
- Find out about placental mammals
- See what's living inside your navel with Nat Geo
Sound effects courtesy Pixabay
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