They Let a Dog in a Lion's Cage. What Happened Then Shocked Everyone

Sometimes very different people become friends. You probably know a pair of best friends who don't have anything in common. Moreover, they are so different that you don't understand how they became friends in the first place. Amazingly, you can find such examples not only among humans. Animals do that to. There have been many unlikely friendships in history, and today we are gonna talk about some of them.