English photographer captures wildlife yawning
The wildlife photographer Paul Goldstein recently published a series of photos of animals with sleep-and yawn. "These photos are a tribute to all who will hear a powerpoint presentation today. You have my sympathy, "joked Goldstein, who managed to figure out the exact moment in which fierce predators have a moment of reflection â€" and we all know how yawning can be contagious.One of the animals is not "caught" to yawn, though, is the chimpanzee. Still, and according to Swedish researchers, the capacity of a chimp in catch the yawns develops gradually with age â€" as in humans.The young chimpanzees â€" between five and eight years old â€" can catch the yawns of humans, but babies are immune. Which suggests that humans and other animals share a general pattern of development.See some of the pictures of Goldstein.
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