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 a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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The largest earthworm on record was found in South Africa and measured 22 feet.
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There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
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The seahorse is the only fish to have a neck.
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