'Zombie' caterpillars are exploding to their deaths

A strange thing is happening to caterpillars in the the English countryside: they're exploding.

The oak eggar moth caterpillar in Lancashire, England, has been infected by a baculovirus. The virus makes the caterpillars climb to the top of plants, toward the sun.

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This is not normal behavior. Usually the caterpillars are deep in the moss and undergrowth--away from birds and other predators. Once at the end of a branch, the caterpillar explodes when the baculovirus bursts out of its skin, looking to infect caterpillars below.

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“It’s like a zombie horror film,” Chris Miller at the Lancashire Wildlife Trust, the wildlife charity that oversees the Winmarleigh Moss Nature Reserve, said in a statement.

The infected caterpillars climb because the baculovirus affects how they respond to light. Once in a higher-than-usual location, they die, leaving their skin behind.

The zombie takeover, however, isn't a new phenomenon. It's been recorded for years, but this appears to be the latest "outbreak."

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