My dog missy has multiple holes in her chest and one in her belly area it is winter where I live so botflies are not laying eggs right now, she recently had to have blood transfusions because she had something attacking her red blood cells but she got better. Today my mom went to pet her and her hair on her chest started to fall out which showed three holes on her chest. Looking further at her we noticed one more down by her belly in between her back legs and another on her neck. The ones on her chest were bleeding when we found them so we gave her a bath and wrapped them up to stop the bleeding. After doing the blood transfusions were unable to take her to the vet because the previous trip was extremely expensive. Any info helps! Thank you!