A Japanese water beetle swallowed by a frog has figured out a great survival trick. It starts walking. In as few as six minutes, 93% of them walk right out the sloppy end of the frog's digestive tract, according to a new paper by ecologist Shinji Sugiurz.
Via Wired, which has video of the behavior:
Writing today in the journal Current Biology, Kobe University ecologist Shinji Sugiura describes how the beetle, locked behind the frog’s jaws, turns around and scrambles through its digestive tract. In carefully designed lab experiments, Sugiura found that 93 percent of the beetles he fed to the frog Pelophylax nigromaculatus escaped the predator’s “vent”—aka anus—within four hours, “frequently entangled in fecal pellets,” he writes. The quickest run from mouth to anus was just six minutes. The beetles then went about their day as if they hadn’t just spelunked through a digestive system, and even swam effectively.
I wonder it the beetle hums this as it's walking:
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