Newsweek spoke to a veterinarian who explained the reason behind this behavior, which is more common than you may think.

In normal flight, fuel gravity-feeds down to fill the header tank, which is connected to the suction side of the fuel pump. When the airplane rolls inverted, the header tank is now above the ...

Have you ever watched a cat snoozing for hours, purring away in a sunbeam, and wondered how they can be so content doing so ...