Killer whales, also called ____, are black with white undersides.
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koalas
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Female ____ transfer eggs into the brood pouches of males.
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lizards
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Female kangaroos and ____ carry their young in a pouch.
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locusts
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Cicadas are true bugs, whereas ____ are grasshoppers.
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orcas
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Chameleons, geckos, and iguanas are types of ____.
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ostriches
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Arctic ____ have the longest migration journeys.
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ravens
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Crows caw, whereas ____ are larger and make croaking sounds.
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seahorses
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Penguins, emus, rheas, kiwis, and ____ are flightless birds.
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terns
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