Chronic stress, or a constant stress experienced over a prolonged period of time, can contribute to long-term problems for heart and blood vessels. The consistent and ongoing increase in heart rate, and the elevated levels of stress hormones and of blood pressure, can take a toll on the body.
Excess Tearing. The most common cause of tear stains in dogs is excess tearing or epiphora, which makes the hair and skin around the eyes damp. This can lead to the growth of bacteria and yeast. Red yeast, which produces a reddish brown discoloration of the face, is a common cause of tear stain problems.
Tear Stains are a leaky brown or reddish goop that flows from the pets eye and creates a mark or streak on the fur that is hard to remove. They can also be called blood stains. Tear Stains can begin as a puppy or occur later in the adult years of dogs. They sometimes even have a smell to them, which is not pleasant.