籠子是狗狗的避難所，是他最愛去的地方，不應該成為懲罰他的地方，這是新近的訓狗理論

我們叫它快樂狗籠訓練

http://www.humanesociety.org/animals/dogs/tips/crate_training.html

Crate training should not be abused, otherwise the problem will get drastically worse. The crate is not intended as a place to lock up the puppy and forget her for extended periods of time. If your puppy soils her crate because you left her there too long, the house training process will be set back several weeks, if not months.