Why does the dog always look out of the window? Why does the dog always lie prone and yell at me when I go to the toilet?

You don't need to worry that the dog will look out of the window. Every dog has different hobbies and characteristics. For example, some of my dogs like watching TV, and some like to sleep without watching anything. This is not a problem. If you are interested, take the dog out for a walk. I think it's because you want to go out for a walk

When you go to the toilet, he yells at your stomach to get your attention and let you touch it.

To sum up your problem, I think you should spend less time with your dog, which is why your dog will attract your attention even when you go to the toilet. Besides, your dog is not an introverted dog, but an extroverted dog. You should spend more time with him and be crazy. I suggest you take him out for a walk every day, or stay with him for more than 5 minutes. In fact, dogs are easy to satisfy, but they are not allowed to eat, sleep and bathe.