Excessive eye mucus in dogs may be caused by internal heat, eye diseases, short nose, blocked nasolacrimal ducts, ear mites, etc. It needs to be judged based on the specific situation of the dog. When feeding your dog, try to choose light food, and do not feed food that is too salty or oily, otherwise it will easily cause the dog to get angry. Clean foreign objects in the dog's eyes regularly to avoid the growth of bacteria.