This case presentation summarizes the medical history and examination of a 1 year old female patient presenting with fever and cough for 4 days. On examination, the patient had normal vital signs with bilateral crepitations on lung examination. Chest X-ray and lab tests were performed. Differential diagnoses of acute bronchiolitis and pneumonia were considered. The patient was treated with nebulizers, antibiotics, antipyretics and IV fluids. Acute bronchiolitis was concluded as the likely diagnosis based on symptoms, examination and test results.