Hippo family napping underwater together.Interestingly, hippos can sleep underwater using a reflex that allows them to bob up, take a breath, and sink back down without even waking up.Did you know? π
Hippo family napping underwater together.Interestingly, hippos can sleep underwater using a reflex that allows them to bob up, take a breath, and sink back down without even waking up.Did you know? π
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