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Doctor bats monitor asleep upside-down bat patient’s Rapid Ears Movements R.E.M. echolocation motions.
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Sleeping patient’s eyeballs run circles around hospital bed as doctor monitors R.E.M. rapid eye movement chart.
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A grayhound says she's rapid and her friends think she said she's rabid.
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A shark asks his friend if he's going to the after-frenzy.