1. Why do I even have a belly button? Your belly button, or navel – clinically, your umbilicus – is the permanent scar left from where your umbilical cord connected your circulatory system, when you ...

Whether you have an innie or an outie, pretty much all us mammals have a belly button. But before you had a belly button, there was actually a different bit of anatomy in its place. While you were ...

(The Conversation) – Everyone has one, but you might not know much about it. Here biologist Sarah Leupen, who teaches human and comparative animal physiology, explains the ins and outs of belly ...

If you have a pet cat or dog, it’s belly button isn’t easy to see. It’s a subtle scar on its tummy, covered by fur. But humans have obvious belly buttons. They come in different sizes and shapes. I ...

An umbilical hernia is a condition in which part of the intestine or fat bulges out through the muscles at the belly button, where the umbilical cord is located before birth. Umbilical hernias are ...