Animals

Which fish balloons itself with a spiky exterior?

More Questions from Animals
In the world of Harry Potter, what animal delivered mail for wizards?
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How many teeth do African elephants have to chew their food with?
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What insect may eat holes into your clothes?
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How many chambers does a fish heart have?
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What animal curls up into an armored ball when threatened?
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What color are koalas?
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Which of these is a large-eyed primate from Madagascar?
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Which animal's diet consists of insects?
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