This is probably an anal gland infection if your dog's anus is black. Dogs can get infections in their glands very easily, especially if they have not been cleaning themselves properly. An anal gland infection is an infection that may have started externally but this is now an internal issue and can not be solved simply by cleaning the dogs anus.
You may also want to talk to your vet about why this might have happened, whether it is because of uncleanliness or if there is a deeper underlying issue that you need to address.
Dogs and other animals can not tell you when they are in pain and for this reason you should take them to be looked after by a professional as soon as you can. This will help to find out what the problem is and also the vet will be able to prescribe any medication that may be needed.
- Visit a vet
You may also want to talk to your vet about why this might have happened, whether it is because of uncleanliness or if there is a deeper underlying issue that you need to address.
- Abscess
- Importance of seeking medical advice
Dogs and other animals can not tell you when they are in pain and for this reason you should take them to be looked after by a professional as soon as you can. This will help to find out what the problem is and also the vet will be able to prescribe any medication that may be needed.