Most probably, your dog has got injury. This injury can result when dogs cross thorny bushes because scrotum can be damaged due to thorns. This can result in bleeding. It is necessary to stop the bleeding and use some medicines to avoid infection.
You should wash the wounds and then apply topical antibiotic preparations to avoid infection. It will be difficult for your to do this. Ideally take him to vet because he knows how to handle this situation and which wound cleaning solution and antibiotic are better for your dog. So, get help from your vet.
You should wash the wounds and then apply topical antibiotic preparations to avoid infection. It will be difficult for your to do this. Ideally take him to vet because he knows how to handle this situation and which wound cleaning solution and antibiotic are better for your dog. So, get help from your vet.