Baby hippos, also known as calves, are adorable and exhibit fascinating behaviors, including yawning. When baby hippos yawn, ...

If you think a baby sloth's yawn sounds cute, just wait until you see the real thing. The Cincinnati Zoo recently posted a groundbreaking video of their newest baby sloth, and let's just say it has ...

If you're looking for something to put a smile on your face, this video of an adorable baby goat will do it. @Terry Farm shared the video of this little cutie yawning that will make you swoon. But ...

This yawning baby bat is just trying to have a good start to the day. He looks so comfortable and sleepy wrapped up in towels that he might never want to leave. Credit: Batzilla the Bat via Storyful ...

Simply looking at the word can stimulate a yawn. I’m actually yawning while typing this piece. Interestingly, all vertebrates — a living being with a spinal column — yawn. Vertebrates include mammals, ...

Even fetuses yawn, a new study shows. During the second and third trimester, fetuses yawn frequently, and those yawns can be distinguished in four-dimensional ultrasounds from other mouth-opening ...