Fetuses Yawn in Utero | Video

Wednesday, November 21, 2012 - 18:00 in Paleontology & Archaeology

Ultrasound videos can capture fetuses yawning in the womb. While fetuses yawn frequently during mid-pregnancy, yawning tapers off as fetuses develop.

Read the whole article on Live Science

More from Live Science

Latest Science Newsletter

Get the latest and most popular science news articles of the week in your Inbox! It's free!

Check out our next project, Biology.Net