Tear stains are simply discoloration caused from excessive tearing or insufficient drainage. Epiphora is caused by the accumulation of a pigment called Porphyrin, which is found in tears, saliva, and urine. With most dog breeds there are small holes beneath the eye that drains tears away and down the throat. However, certain breeds with shallow eye sockets cannot properly drain excessive tears, and therefore causesEpiphora. The first step is to see a vet to rule out infections, irritation, allergies, or injuries to the eye. [Read More]