What is a key sign of demodex mites in dogs?

Demodex mites, also known as demodectic mites, are a type of parasitic mite that can be found on the skin of dogs. A significant sign of their presence is hair loss, particularly on the face and around the eyes. This hair loss is often accompanied by redness and irritation of the skin. The condition related to these mites is typically known as demodicosis or demodectic mange.

The hair loss occurs because the mites inhabit the hair follicles, leading to inflammation and subsequent hair shedding. In some cases, secondary infections can occur as a result of the irritation caused by the mites, further exacerbating the condition. Recognizing hair loss on the face can be essential for early diagnosis and treatment.

Other options, while they may reflect various health issues in dogs, do not correlate with the specific signs associated with demodex mite infestations. Mites primarily affect the skin, leading to the characteristic hair loss rather than causing behavioral changes, digestive issues, or temperature changes.