Animal Studies That Prove Humans Are Weird

In order to find out whether yawning was contagious in tortoises, scientists had to train one tortoise to yawn on command. As for the sheep, researchers found that they could recognize the faces of 50 other sheep about 80% of the time.

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Key Facts In This Video

  1. In the 1930s, Dr. Allan Walker Blair let a black widow spider bite him to learn about the venom's effects. 01:25

  2. A Swedish study found that chickens tend to prefer conventionally beautiful human faces. 03:50

  3. Multiple studies have tested whether owners resemble their pet dogs. 07:08

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