350K views · 3.3K reactions | Epic Road Trip Ideas  Highway to...

Why is Stumpy so grumpy..!? Maybe he just needs a good nights sleep! Crocodilians have a clever way of resting their brains without letting their guard down. Like dolphins and some birds, they can practice unihemispheric sleep. This means one half of the brain goes to sleep while the other stays awake, so they can rest and still detect danger or potential prey. This ability helps them survive in environments where staying alert is just as important as conserving energy. Even when they appear com