A fennec fox walks against the wind in Morocco. The fennec, or desert fox, is a small nocturnal fox found in the Sahara Desert in North Africa. (© Francisco Mingorance/National Geographic Traveler Photo Contest)

A fennec fox walks against the wind in Morocco. The fennec, or desert fox, is a small nocturnal fox found in the Sahara Desert in North Africa. (© Francisco Mingorance/National Geographic Traveler Photo Contest)