The reasons why dogs keep chewing their feet:

1. If your dog suddenly starts licking its feet due to pain, especially only one foot, then Usually means pain.

2. Due to allergies or fungal infections, habitual foot licking is often attributed to itching caused by allergies. The allergen is likely to be anything.

3. Due to boredom, dogs who have nowhere to dissipate their energy may become bored and frustrated, resulting in excessive licking and biting of their paws.

4. Due to anxiety, anxious dogs often lick their paws to distract themselves and need comfort.

5. Hormone imbalance. When a dog has a hormonal imbalance, it may produce a large amount of cortisol or fail to produce enough thyroid hormone, resulting in red spots on the skin, dry hair, hair loss, etc. Dogs licking these red spots and bald spots can lead to secondary infections.

6. Caused by dry skin. Dry skin in dogs may be caused by breed, excessive bathing or weather.

7. Caused by fleas or ticks. Fleas and ticks can cause severe itching, causing dogs to compulsively lick and chew their feet.

8. Caused by deicing salt and cold weather. If your dog only has the habit of licking his paws in winter, it is most likely caused by snow and deicing salt.