流浪小狗被大狗欺负，退伍老兵挺身而出，给了小狗一个温暖的家

Suddenly, the older brother heard a faint, urgent barking from outside the window. He quickly turned around and saw a large adult dog shoving and pushing a small puppy in the open space outside. It was clearly bullying the defenseless little creature. Without thinking, the older brother immediately shouted to stop it. He then quickly went over and chased the dog away. Upon closer inspection, he realized it was a newborn puppy, its eyes barely open, its body soft and squishy. He didn't know if it had been separated from its mother or abandoned, but had somehow wandered off to this place alone. Fearing the adult dog might return and hurt it again, the older brother didn't hesitate to take the puppy home. However, the older brother was a retired soldier and had never raised a puppy before. What should he do next?