But an animal shut in a cage or confined to a room can only display a small part of the behavior it exhibits in the wild, where it seeks food, chooses a mate and defends itself against its enemies. Nature is not really far away at all.
但一隻動物關在籠中或在侷促的空間中，所能展現的只是單純的行為，在自然界則有覓食、求偶、禦敵等活動，充滿無限生機。