Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
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The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
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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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Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
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Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
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The male seahorse carries babies and 'gives birth' to them instead of the female.
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