Which of the following is NOT a sign of a healthy animal?

A dull coat is indicative of health issues in animals and is often considered a sign that something may be wrong. Healthy animals typically have a shiny, well-groomed coat, reflecting proper nutrition, good grooming practices, and a general state of well-being. Other signs of a healthy animal include bright eyes, which suggest alertness and good overall health, as well as a good appetite, indicating that the animal is not experiencing illness or distress. In contrast, a dull coat can suggest problems such as nutritional deficiencies, parasites, illness, or stress, making it the correct answer as the sign that does not indicate a healthy animal.