Return to menu. The most common sign of ear mite infection is scratching of the ears. An instrument for examining the ear canals, an otoscope, has the necessary magnification to allow us to see the mites. Sometimes the mites can b found by taking a small amount of the black material from the ear canal and examining it with a microscope. Although mites may leave the ear canals for short periods of time, they spend the vast majority of their lives within its protection.
Ear mites are common in litters of puppies whose mother has ear mites.
Ear infections may also cause the production of a dark discharge in the ear canals. It is important that your puppy be examined to ensure the black material is due to ear mites and not infection. Return to menu. Spaying offers several advantages. The female's heat periods result in about 2-3 weeks of vaginal bleeding.