Dạy hiệu lệnh “nằm” trước khi dạy giả chết. Chọn một nơi thoải mái để huấn luyện chó. Ra lệnh cho chó ngồi. Đứng trước mặt chó khi bảo nó ngồi. Hướng dẫn chó nằm xuống mà không cần phần thưởng. Tiếp tục luyện cho đến khi chú chó của bạn biết nằm xuống theo hiệu lệnh.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Playing dead involves your dog lying down. Before he can learn this trick, he should be comfortable with the command to lie down. Preferably, this area should also be quiet so that your dog does not become easily distracted. If your dog does not already know this command, teach him by holding a treat high in the air with your hand. As he is looking up at the treat, push on his back end until he sits; firmly say the word 'sit' as you are doing this.  Once he is seated, reward him with the treat b