Appendicitis, frequently associated with chronic bloating, can be a hidden cause. While radiographic and ultrasound results may appear normal, gut stasis-related gas can obscure a clear diagnosis. Computed tomography (CT) scans are invaluable for detecting appendix dilation and thickening of the sacculus rotundus, enabling timely intervention. Although surgery is the standard treatment for appendicitis, complications such as peritonitis may occur, particularly in high-risk animals like older rabbits. A 9-year-old Netherland Dwarf rabbit with decreased appetite and irregular, small fecal pellets was diagnosed with Rabbit Gastrointestinal Stasis (RGIS). Despite initial treatment, improvement was minimal. An ultrasound revealed no abnormalities, but a CT scan identified inflammation in the appendix. Due to concerns about the rabbit’s age and potential surgical risks, a decision was made to treat with a combination of Marbofloxacin and Metronidazole for one week, leading to improved fecal consistency. After 4 weeks of Metronidazole alone, the rabbit resumed normal eating and stool production. This case highlights the value of CT scans in diagnosing appendicitis and the efficacy of medical treatment in high-risk rabbits.