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hedgehog
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Western European hedgehog (Erinaceus europaeus).
Small squirrel peeking out of a snowy bank, with a blue circle surrounding it.
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Western European hedgehog (Erinaceus europaeus).
Western European hedgehog (Erinaceus europaeus).

hedgehog

mammal
Also known as: Erinaceinae
Written by
Guy Musser
Archbold Curator Emeritus Vertebrate Zoology and Mammalogy, American Museum of Natural History, New York City, U.S.
Guy Musser
Fact-checked by
Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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hedgehog, (subfamily Erinaceinae), any of 15 Old World species of insectivores possessing several thousand short, smooth spines. Most species weigh under 700 grams (1.5 pounds), but the common western European hedgehog (Erinaceus europaeus) can grow to 1,100 grams. Body length is 14 to 30 cm (5.5 to 12 inches), and there is a stumpy and sparsely furred tail measuring 1 to 6 cm. In addition to the three species of Eurasian hedgehogs (genus Erinaceus), there...

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