The formation process of dog tear stains

1. Dogs have too many tears, and the excess tears will enter the nasal cavity through the nasolacrimal duct.
2. The nasolacrimal duct is blocked, tears will flow out of the eyes, and the hair at the corners of the eyes will be moistened.
3. Moist hair breeds bacteria, which can cause the coat to change color and become "red tears".

Causes of dog tear stains

1. The owner’s improper care of the dog’s eyes causes the dog to secrete tears all the time, forming tear stains over time.
2. When the dog’s eyes and ears are inflamed, it will stimulate the abnormal secretion of tears in the dog, thus forming tear stains.
3. If your dog eats an improper diet, such as a daily diet that is too greasy or too salty, it will cause the dog’s tear stains to worsen.
4. The dog’s food bowl, water bowl and other supplies are not cleaned in time, which can breed bacteria and cause eye infection and increased tears.

Dog breeds prone to tear stains

Dogs with nasolacrimal ducts that are prone to bending, such as poodles; dogs with protruding eyes that secrete strong tears, such as Chihuahuas; short noses with prone to nasolacrimal ducts Dogs with clogs, such as pit bulls. Their tear stains are more obvious than other dog breeds, and white dogs also have more obvious tear stains.