Dogs have tear stains because of dietary problems
Diet is the most common reason for dogs to develop tear stains, and it is also the most understood reason. Dogs that eat salty food are prone to tear stains. Anyone who has had a dog for more than 3 months will know this. Therefore, when encountering this kind of situation, first stop feeding dog food or food that contains heavy salt content, and give the dog more water to drink. Just eat as lightly as possible
The reason dogs have tear stains is because there is something wrong with their eyes
Everyone knows that there is something wrong with the eyes of dogs that will cause tear stains. For example, dacryoadenitis: the lacrimal glands that secrete tears are infected, causing abnormal and large amounts of tear secretion. The nasolacrimal ducts have no time to clear so many tears, which leads to the outflow of tears and the formation of unsightly tear stains over time. There is also a simpler eye problem, which is trichiasis. Trichiasis keeps irritating the cornea. This situation will make the dog's eyes feel very uncomfortable, causing the dog to frequently scratch his eyes with his forelimbs. Therefore, it is often seen that they appear tearful. It will also cause very serious tear stains.
Tear stains in dogs are caused by blocked tear ducts
In addition, you may not know that blocked nasolacrimal ducts can also cause tear stains. Because the nasolacrimal duct is infected, inflamed and swollen, causing the entire nasolacrimal duct to be completely or incompletely blocked, tears cannot be discharged from the nasolacrimal duct normally and will naturally overflow, forming unsightly tear stains. In addition, when the ear canal is infected by bacteria, viruses, fungi, or parasites, or the ears are swollen, painful, or itchy, it will cause the dog's feet behind the ears to scratch frequently. The facial nerve and facial nerve are intertwined, and this is a very sensitive area because deep pain in the ear canal extends around the eyes, stimulating tear gland secretion. When excess tears cannot drain out of the nasolacrimal duct, they overflow from the corners of the eyes near the nose. After a long period of accumulation, brown tear stains on the hair will become very obvious.
Certain breeds of dogs
Because of their special appearance, the curvature of the nasolacrimal duct becomes very large, so the amount of tears discharged is limited. Even the normal amount of tear secretion cannot be loaded, and it will Causes unsightly tear stains or even dark circles under the eyes. This kind of situation usually occurs in short-nosed dog breeds, such as Pug, Shih Tzu, and Japanese Dog.
Heredity
Tear stains are hereditary. I’m afraid many people don’t know this. This is because primary tear staining is a hereditary disease. Tears are often secreted excessively, which can cause Therefore, it is easy to cause tear stains.
