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Polar bears are carnivores that mainly eat ____.
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aphids
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Aphids (tiny plant-eating pests) are a favorite food for ____.
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beetles
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Crows caw, whereas ____ are larger and make croaking sounds.
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koalas
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Female ____ transfer eggs into the brood pouches of males.
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ladybugs
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Some ants farm ____ for their honeydew (sugary excretion).
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ravens
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Female kangaroos and ____ carry their young in a pouch.
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seahorses
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Tree ____ are slow-moving mammals of tropical rainforests.
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seals
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Fireflies are really flying ____ that flash light to attract mates.
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sloths
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