Make sure you don’t scroll down to the photos below unless you have a pillow and a blanket ready for a nap. These images will make you sleeepppy.
A few years ago, a bunch of researchers sat next to 33 chimpanzees and started yawning a lot. Guess what the chimpanzees did? They yawned back! They helped prove what we’ve all known for a long time: yawning is contagious!
The researchers made a lot of chimps look pretty sleepy, but no word yet if there was an increase in nap time for both researchers and chimpanzees.

If we can make chimpanzees yawn, can animals make us yawn? Scroll through these pictures and let us know if feel a yawn coming on!








I only yawned twice. YAWN.
i yawned three times. when i saw the chimpanzee, seal and the snow monkey i yawned one time
The leopard scared me but I was still tired!!!!
I yawned twice one seeing the chimpanzee and again at the end of the video
I yawned 1 time seeing the photos
I didn’t yawn at all because they are pictures.
The baby monkey is so cute!!!!!!!!!!!!!!
i like they baby too!!! lol
I yawned at the sea lion
lol