Which of the following is NOT a symptom of vent disease in rabbits?

Inflamed vent area is a typical symptom of vent disease in rabbits, making it an indicator of the condition rather than something that falls outside its scope. Vent disease, or vent disease complex, usually involves inflammation and irritation in that area, often leading to symptoms such as excessive drooling, which occurs due to discomfort and difficulty eating or grooming.

In contrast, fecal impaction can sometimes be associated with underlying digestive issues in rabbits but is not a direct sign of vent disease itself. Difficulty breathing may occur if the rabbit experiences severe systemic effects from the disease, but it’s not a primary symptom of vent disease specifically. Thus, observing an inflamed vent area directly ties into the understanding and diagnosis of vent disease, confirming why it is correctly identified as a symptom rather than an incorrect choice.