True or False: Gingivitis occurs to some degree in most adult dogs and cats of any age.

Gingivitis is indeed a common condition observed in adult dogs and cats, and it generally affects animals of any age. The underlying cause of gingivitis is the accumulation of plaque on the teeth, which, if not removed, can lead to inflammation of the gums. This condition often goes hand in hand with periodontal disease, making it prevalent in most adult pets.

While some animals may show no visible signs of gingivitis, the presence of dental plaque is a contributing factor that leads to a degree of gum inflammation in the vast majority of cases. Regular dental care, including professional cleanings and at-home oral hygiene, can help manage and reduce the occurrence of gingivitis, but it is reasonable to state that it is a widespread issue. Thus, the answer reflects the general consensus in veterinary dental health that gingivitis is a common occurrence in adult dogs and cats.