Why Do Babies Twitch in Their Sleep?
When I brought my puppy home last August, I knew he would be fun to play with. I had no idea how entertaining he would be when asleep. He dozed constantly, and more often than not, his whole body — legs, tail, lips, eyes, ears — would twitch. This isn’t a quirk of canines. Sleep twitching happens to “literally every mammal that has been looked at”, says Mark Blumberg, a psychology professor at the University of Iowa. Dogs, cats, rats, ferrets, sheep, squirrels — they all twitch. Even whales twitch their flippers. “I have YouTube videos of a guy who recorded his girlfriend’s toes when they twitched,” Blumberg says.
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