There are many reasons why your dog may scratch themselves, here are some possible reasons:
Feeling itchy: Dogs may feel itchy due to itchy skin or other reasons, causing them to use their teeth or claws Go scratch your skin.
Anxiety: Some dogs may scratch themselves because they are anxious, nervous, or stressed out. This behavior is often related to changes in environment, separation anxiety, or other social issues.
Pain or discomfort: Dogs may scratch themselves because of pain, injury, or discomfort in certain parts of their body. This could be due to joint pain or other health issues due to overactivity, age, etc.
Food or environmental allergies: Dogs may be allergic to certain foods or environments, which may cause itching and inflammation of the skin, causing them to scratch themselves.
If your dog keeps scratching himself, contact your veterinarian promptly to determine the cause and get appropriate treatment.