what causes stains on white dogs
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. Excess tearing is also your dog's response to irritation. Dust or other allergens can irritate your dog's eyes and cause them to water.