There is a black water bubble on the dog's head, will there be problems! Intersection | Myrtle Thai

There is a black water bubble on the dog's head, will there be problems! Intersection

I went to travel a few days ago. When I came back, I found a black -gray water bubbles on the dog's head. Looking into the hair with red blood, it was soft. I dare not pull it. Intersection Intersection Intersection