Which of the following is a sign of Tyzzer's Disease?

Diarrhea is a key sign of Tyzzer's Disease, which is caused by the bacterium Clostridium piliforme. This disease primarily affects young rabbits and often leads to severe gastrointestinal distress. The presence of diarrhea indicates inflammation and disruption in the digestive tract, which is a common symptom associated with the pathogenic effects of the bacterium attacking the liver and intestines.

Recognizing this symptom is crucial for early diagnosis and management, as it can help in making decisions regarding treatment and care for affected rabbits. While other conditions might also present with diarrhea, in the context of Tyzzer's Disease, it specifically highlights the infection's impact on the rabbit's overall health.