(a species of owlet moth (Noctuid)) Some caterpillars, after they emerge from their egg, can increase their weight by 25,000 times.

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Natural History Museum books

Natural History Museum Alive: The Stories Behind the Museum's Great Extinct Creatures

Alive book - small

Get the inside scoop on the spectacular specimens featured in David Attenborough’s Natural History Museum Alive with the official film guide.

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