Dogs and cats can sometimes suffer from reddish-brown marks around the eyes. Not only does it look unsightly, but it is often a sign of health problems. There are different causes for tear stains: hormonal, hereditary, diet-related and so on. You can remove or mask them using a cream, powder, solution or stick, but also prevent them with specific supplements for your dog's eyes. These supplements are anti-inflammatory and specially formulated to help prevent ugly tear stains from the inside out.