Schnauzers & Mites

With a medium, square-bodied build, Schnauzers have a distinct coat of wiry black or gray and white fur. Their agility, intelligence and energy make these dogs a popular pet among some Americans. However, as with some other dog breeds, Schnauzers are susceptible to ear mites. Without treatment, ear mites can cause a variety of minor and major ear problems in Schnauzers. Understanding ear mites and their effects on Schnauzers is one of the first steps in finding a solution.

  1. Description of Ear Mites

    • While a variety of ear mites can cause ear problems in dogs, the most common is known as Otodectes cynotis. Ranging in size from 0.3 to 0.5 millimeters, ear mites have eight legs that end in attachments similar in appearance to cups. In the male, this cup-like attachment is noticeable on each leg, while the females have them only on the front four. Ear mites have a life span of approximately four weeks, with eggs hatching within four days of being laid by the female. Eggs have an oblong shape and are soft with a white appearance. Larvae, only 0.2 millimeters in size, retain a pale coloring and exhibit the four sets of legs seen in mature ear mites, but only one pair of the legs have the cup-like attachments at this stage. Though called ear mites, these parasites can easily infect other parts of the Schnauzer's body.

    Transmission

    • Ear mites have a high rate of transmission from animal to animal. Schnauzers and other dogs can easily contract ear mites from other animals, including dogs, cats, ferrets and rabbits. In addition, dogs are at risk of exposure during infancy as ear mites can easily pass from mother to puppy.

    Symptoms and Effects

    • During infestation, ear mites burrow into the lining of the Schnauzer's ear canal. The result will be severe itching which the animal will try to relieve by scratching or shaking its head. In addition, the earwax of the dog can become infected with bacteria and blood. Blood and earwax will begin to crust within the ear canal and outer ear. Ears will give off an unpleasant smell. An additional risk of ear mites is the chance of a secondary bacterial infection that can result in fever and behavioral changes in the dog. Untreated infestations can result in permanent damage to the eardrum and ear canals, causing hearing loss.

    Treatment

    • There are various treatments for ear mite infestations. Apply ear medications containing insecticides such as pyrethrin, ivermectin, and fipronil to the ears of the dog for two to four weeks. The treatment must contain insecticide, as non-insecticide treatments are ineffective in killing ear mites. Since ear mite activity is not limited to the ear canal, apply an insecticide-based treatment, such as those used for fleas. Put it all over the dog, including its tail. If there is more than one pet in the home, treat all pets at the same time. You generally don't need to treat the home and yard, since ear mites cannot survive for long without a host.