Pustules on a Puppy's Belly: Differential Diagnosis and Veterinary Care

White pus-filled bumps on a puppy's abdomen may indicate:

• Pyoderma – bacterial infection (Staph/Strep) with pustules.
• Folliculitis – inflamed hair follicles.
• Mites – Demodex or Sarcoptes.
• Allergies – food, environmental, flea bites.
• Other: fungal, autoimmune, neoplastic.

Veterinary exam with skin cytology/scraping is needed for diagnosis and targeted therapy.