What is a common consequence of untreated dental disease in animals?

Untreated dental disease in animals often leads to periodontal disease, which refers to inflammation and infection of the structures surrounding the teeth, including the gums, periodontal ligament, and alveolar bone. When dental disease progresses without treatment, plaque and tartar build up on the teeth, leading to the destruction of gum tissue and bone that support the teeth. This can cause pain, tooth loss, and systemic health issues as bacteria from the infected gums can enter the bloodstream and affect other organs, such as the heart and kidneys.

The other choices do not effectively represent the likely outcomes of untreated dental disease. For instance, increased energy levels and weight gain are not directly linked to dental health, as untreated dental issues typically cause pain and discomfort rather than enhanced vitality or weight stability. Stronger teeth also contradict the nature of untreated dental disease, as the condition generally weakens dental structure, leading to increased risk of dental complications. Hence, periodontal disease is the most relevant and accurate consequence of untreated dental disease in animals.