Mites

Image of veterinarian cleaning a cat's ears.

There are many types of mites that infect dogs, cats, and other animals. Mites are microscopic arthropod parasites that, for the most part, infect the skin or mucous membranes. Mites can even be present on birds and reptiles. The most common mites that infect dogs and cats are ear mites, Demodex, scabies, and Cheyletiella.

Ear mites are very common on cats and are occasionally seen on dogs. They live primarily in the ear canals and can cause severe irritation. They are easily transmitted between pets, so if they are found in one pet, all pets in contact should be treated. A different species of ear mite can infect rabbits.

Demodex is a mite that all dogs are exposed to, but only a small percentage of dogs develop skin problems. In young puppies, it usually causes small areas of hair loss especially on the head and front legs. Adult dogs tend to show more generalized symptoms, and usually have more red, itchy skin lesions. Adult dogs that develop Demodex usually have another disease such as hypothyroidism, Cushings, or cancer that suppresses the immune system and allows the Demodex to increase in numbers and cause lesions. It is now recognized that cats have their own species of Demodex, but the disease is much more rare in cats.

Scabies is a skin disease in dogs or people caused by the mite Sarcoptes. Most dogs with this disease are intensely itchy. Scabies is highly contagious, but not all dogs in contact are as itchy. People also have their own species of Sarcoptes; most of their cases are due to the human scabies mite, but it is possible for people to develop lesions from the dog scabies mite.

Cheyletiella species of mites can be seen in rabbits and dogs. It is especially seen in puppies as large flakes of scale and is sometimes called "walking dandruff." There is no one treatment that will kill all the types of mites discussed here. Your veterinarian can advise you on the various treatments for each problem.

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  • "My two cats consistently get the BEST care from the vets at Falmouth Veterinary Hospital, starting with the lovely people at check-in to the kind and caring folks upon leaving. The vets and assistants genuinely care about the health and well-being of our two kitties, and as a pet mom, I always feel reassured and happy with their care."
    Kristen B.
  • "I have been a client there for over 30 years. Care is always excellent. Would not want to ever have to go elsewhere. They are great and so loving when treating my dogs."
    Marcia M.
  • "Dr Graves goes above and beyond with our senior dog. He is caring and thoughtful and respectful. He understands that our dog is a part of our family and treats him as such. The other vets we have met have been just as great and all of the staff are friendly and helpful. We could go to closer practices, but we won’t because this crew is worth the drive."
    Emily G.