Dogs are our most faithful little partners, not only to people, but also to their own partners. In the case of a dog, one of the masters chose to adopt two of them to be a companion, and two of them grew up together, creating a strong friendship. But the tragedy is that the big dog lived 13 years of age and finally got old, but the other little dog changed at once.
Even if he doesn't come back, he'll leave half of his meal. The dog had no mental support, the two dogs had lived together, the night master saw a scene like this, after his brother left, where he slept with a child every day.

Seeing the dog's daily state of disillusionment, he spends his days crouching at the door of his brother's house, watching quietly and looking forward to the day when his young friends can return home again.
The master felt that the dog was depressed, so he took the dog for a trip, but he didn't reduce his heart's grief, he was still slanted, he came with his brother, and he felt that his brother died because he missed him too much and suffered from depression every day.

You don't have to think that an animal doesn't know anything. It's got more feelings than you think.