Dogs licking their paws may be caused by interdigital inflammation, which usually causes redness, swelling, and itching. You should take your dog to the pet hospital for examination and treatment in time to avoid aggravation of the condition. Usually after bathing the dog, be sure to blow dry the hair, especially the soles of the feet. Do not take the dog to play in wet places to avoid bacterial and fungal infection. It will recover after about half a month.