From the biological point of view, play refers to the act of wasting one's energy without providing much direct help to one's means of survival. But in a broad sense, playing can relieve the pressure of animals themselves. In other words, our definition of the game is: all behaviors that can reduce one's own pressure and thus better serve one's own means of subsistence. Therefore, when you are willing to observe carefully, you will find that most animals in the world (excluding microorganisms so far) have similar behaviors. Such as tigers, polar bears or cats. Let me take the cat as an example for the moment. Anyone who has owned a cat probably knows that cats seem to have a curiosity that ordinary people can't understand. When a cat catches its prey, most of them don't kill it immediately, but release it at will, then catch it again, and so on. Many zoologists speculate that this is a unique and inferior way for cats to play. So most animals can play. But to say which animal is the most interesting, I can only say that it is related to the nature and experience of animals. In essence, the landlord can collect information in person. Let me talk about my experience: human beings have released themselves from a long time ago, so that a few rulers don't have to worry about how to survive. In this way, their hedonic substances will occupy most of their life time. They don't have to work hard on many difficult activities between life-sustaining materials since childhood, and they can't adapt when they grow up. So these people love to play. I think animals may be the same.

—————— The above is the original answer from the dream of disabled people in a long night. Please indicate forwarding.