What could cause a reoccurring abscess on cocker spaniels foot?

* Foreign body (e.g., grass awn, thorn)

* Trauma

* Infection (e.g., bacterial, fungal)

* Autoimmune disease (e.g., pemphigus foliaceus)

* Cancer (e.g., squamous cell carcinoma)

* Breed-specific susceptibility (e.g., cocker spaniels are more prone to foot problems)