Which of the following is a common symptom of dental disease in pets?

Bad breath and difficulty eating are indeed common symptoms of dental disease in pets. Poor dental health can lead to the buildup of plaque and tartar, causing periodontal disease, which often results in halitosis, or foul-smelling breath. This unpleasant odor is a direct consequence of the bacteria and decaying food particles present in the mouth due to gum disease.

Additionally, as dental disease progresses, pets may experience pain and discomfort, making it challenging for them to eat properly. Difficulty eating can manifest as reluctance to chew, dropping food, or preferring softer food options, as they may instinctively avoid anything that causes them pain. Recognizing these symptoms early is crucial for ensuring that pets receive the appropriate dental care and treatment.

The other choices do not accurately reflect common symptoms of dental disease. For instance, a bright, shiny coat typically indicates good overall health and nutrition, while excessive barking and increased energy levels are more related to behavioral issues or conditions unrelated to dental health.