When I was asked to do this TED（泰德） talk, I sat down with my cat, as you do, and I thought, "What's going to make the biggest difference to as many cats as possible?" What could it be? And I looked at my cat for inspiration（灵感） and thought, "Yes, that's it. Yes, Kato." That's his name. "Let's tell everybody about the power of play." If some people seem to be the cat people like me, hands up. Yes, welcome.

  Other people seem to be dog people, hands up. You're also welcome. It doesn't matter if you're not really a cat person. If cats aren't really your thing, that's fine. Just take the word "cat" in this talk and replace it with a dog. Or horse, goat, child.

  Whatever（任何） your species of choice is. And that's because play is so fundamental（基本的） to happiness（幸福） that it affects so many different types of animals. In fact, there's research to show that even fish like to play. They actually jump into streams（溪流） of bubbles（泡沫） and ride them to the top and jump out and do it again in case you were wondering（想知道）. Now, when I tell people that I'm a cat behaviorist（行为主义者）, other than the confused looks I get, which you can imagine, and people saying, "A cat? A cat what?" They really are quite confused by it. Then if they don't have a cat themselves, then they'll soon tell me that, "Oh yes, my mother's neighbor's friend's sister has a cat," and they'll often ask me questions about that cat's behavior.

  It's a bit like those of you that are nurses and you get everybody's medical questions. Now, invariably（总是）, I'm often recommending interactive（ 交互式的） play and feeding enrichment（发财致富）. And that's because it has such a positive difference, such a big impact（影响） on their happiness（幸福）. Like（喜欢） you can see here from my cat Kato, play is not only fun, it gets the grey matter working. It's a great way to connect with your cat. And it has lots of physical benefits as well because all that extra exercise is an excellent tool for helping overweight cats shed（流出） those extra pounds.

  This is the very gorgeous（ 华丽的） Moodles, and she came into Cats Protection（保护）'s Care weighing（ 称量） 6.7 kilograms. Now, her very fantastic owner not only continued the diet that was already in place, but she also implemented（实施） a program of interactive（ 交互式的） play and feeding enrichment（发财致富）. It certainly made dieting a lot more fun. And this is Moodles today at her target weight of four kilograms, and she's a much happier and healthier cat for it. Play is important for every cat, young or old, all around the world. Now, I know what you might be thinking, I know how to play with my cat.

  No, that's fine. But if your cat were to give（做） you a review, what's it gonna say? Now, it might not say "could try harder", but it might say "could try smarter". So let's have a look at how to play the cat way. I often act as a bit of a translator between cats and their caregivers. This cat, for example, is saying, "What is this? This mouse is dead. Bring it to me alive."

  And that's where the interactive play comes, because if you just put it there in front of the cat, it's not interesting. You need to make it move, you need to bring it to life. And so you bring the mouse to the cat and the cat goes, "No, no, no, no. Not like that. Make it run away from me."