There may be many reasons why dogs may be itchy, including:
Skin problems: Dogs may be itchy due to skin problems, such as skin allergies, skin infections, parasitic infections, etc.
Environmental problems: Dogs may feel itchy due to environmental problems, such as dry climate, dust and bacteria on sofas, carpets, sheets and other fabrics, plant pollen, etc.
Nutritional issues: Dogs may feel itchy due to a lack of certain nutrients, such as fatty acids, vitamin E, zinc, etc.
Anxiety issues: Dogs may scratch due to anxiety, such as separation anxiety, social anxiety, etc. If your dog is itching frequently, it is recommended to take him to the veterinarian to find the source of the itching and treat it.