Spiders are

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Spiders are

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Spiders are arachnids, part of a large class of arthropods having four pairs of walking legs and no wings, unlikeinsects(which have three pairs of walking legs and a pair of wings) andannelids(which are a type of segmented worm with no jointed legs).Marsupialsare a type of nonplacental mammal whose young are bom very underdeveloped and then continue developing outside their mother's body attached to one of her nipples, usually in a pouch; examples are kangaroos, koalas, and possums.

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