There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
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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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When cats are happy, they may squeeze their eyes shut.
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
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Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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