Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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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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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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