My dog was lost in my hometown on the first day of my New Year. Later, when I found it, I quickly brought him back. After two months of wandering, I suddenly found him in the past two days. | Myrtle Thai

My dog was lost in my hometown on the first day of my New Year. Later, when I found it, I quickly brought him back. After two months of wandering, I suddenly found him in the past two days.

My dog ​​was lost in my hometown on the first day of my New Year. Later, when I found it, I quickly brought him back. After two months of wandering, I suddenly found that he had a bunch of red bumps. There are pustules, what's the matter?