While it could be a sign of a more serious underlying health concern, bad breath is normally a result of an oral problem, such as gum disease. (petpeoplesplace.com)
See your vet — Some behavior problems are a result of underlying health concerns. (petmedicalfresno.com)
Because of the nutrient depletion and sleep disruption that occurs, it's a prime time for triggering underlying health concerns like thyroid dysfunction, adrenal dysfunction, and mood imbalance. (voyagela.com)