(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

Treasures of the Natural History Museum

Treasures book - small image

With lavish illustrations and intriguing stories about more than 200 of the Museum's most treasured possessions, this book is a fascinating insight into the best of our unrivalled collections.

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