Ants have tiny magnetic compasses in their antennae which help them navigate.
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Female kangaroos have three vaginas.
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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The cat brain weighs about 30g.
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In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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