Reasons for dogs with red paws and always licking:

1. Lack of vitamins or trace elements: If there is a lack of vitamins or trace elements, the dog may lick its feet and rely on its own instinct to supplement trace elements. . At this time, the owner should supplement the dog with vitamins.

2. Allergy: Redness of dog paws may be caused by allergies, although this is relatively rare.

3. Fungal infection: Dog’s paws are prone to stains if their hair or nails are too long, and long-term moisture may lead to fungal infection.

4. Inflammation: Wounds or pustules on the dog’s paws can cause inflammation of the feet.

5. Interdigital inflammation: When a dog suffers from interdigital inflammation, the dog will often lick its paws because of discomfort. The dog's paws need to be disinfected and anti-inflammatory treated in time.