What is the dark line that pregnant women get that goes from their belly button to their pubic region, why do they get it, and when/why does it disappear?

Question

Do other animals also get this line or is it just humans?

In: Biology

Answer 1

I had the linea nigra with my first pregnancy. By the time my son turned one it had faded but not completely and I found out on his first birthday I was pregnant for the second time. I thought it would come back dark since it hadn’t completely faded. Instead it continued to fade over the next couple if months completely.