Ear Mites In Cats
One day you're scratching your cat's ears when you notice something unusual inside -- a dark brown, crumbly substance that looks sort of like coffee grounds. Your cat probably has ear mites , tiny, pinpoint-sized parasitic insects that live and breed in the ear canals. They feed on skin debris, cell fluids and blood, and can gnaw on the tissue of the ear canal. Ear mite infestations usually itch, so cats with ear mites will scratch excessively at the backs or insides of their ears -- sometimes to the point of producing raw patches -- shake their heads, or hold their ears at an odd angle.