Which of the following symptoms is associated with VHD in rabbits?

Dullness is a symptom commonly associated with Viral Hemorrhagic Disease (VHD) in rabbits. When rabbits are affected by this disease, they often show signs of lethargy, which includes a lack of energy or interest in their surroundings. This is because VHD can lead to significant internal stress and illness that affects a rabbit's overall behavior and activity levels.

In contrast, while swelling of the ears, frequent grooming, and excessive appetite may indicate other health issues, they are not typical symptoms of VHD specifically. Swelling of the ears could be related to other conditions like ear infections or abscesses, and frequent grooming is usually a sign of stress or discomfort rather than a direct indication of VHD. Excessive appetite could point to metabolic issues or could occur in healthy rabbits, so it does not align well with the typical clinical signs of VHD. Understanding these distinctions is crucial for recognizing the early signs of VHD and ensuring prompt veterinary attention.