Why do sleeping dogs look like they're running? Experts weigh in

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(CNN) — June seems to dream of pursuit. After the long-haired German shepherd settles down for a nap, her floofy, low-slung limbs often begin to twitch and kick. To her owners, she appears to be on the trail of some unseen prey. "When she's sleeping sometimes her paws are going aggressively -- like, …
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