Infection or Infestation. An infestation with parasites such as fleas, ticks, and mites (scabies, mange) is another source canine alopecia. . Bacterial or fungal infections, such as in the case of ringworm (which is actually a fungus), can also be attributed to hair loss in dogs. One of the most common causes of alopecia is mange, which caused by the mite Demodex. Hair loss can also occurs when there is a disruption in the growth of hair follicles, often from infection, trauma, an immune disease, or endocrine system abnormalities. Apr 20, 2017 - Why do dogs sometimes lose too much hair? Are certain breeds more prone to hair loss? Find out what causes bald spots in dogs and what . Jun 22, 2017 - Mites responsible for mange can take over your dog's fur and cause patchy hair loss. Mange causes skin scaliness that will make your dog itch excessively. This itching leads to hair loss if severe enough. Hair loss caused by trauma most often occurs as a result of a dog chronically licking her own fur. Apr 7, 2017 - There are several reasons for canine hair loss that don't involve itchy, inflammatory skin conditions; Causes of hair loss in dogs can include . Apr 30, 2018 - Most of us dog owners have had to worry about hair loss at some point. Hair loss can be normal, or it can be from itching and scratching . Dog and cat hair loss (also called alopecia) is the abnormal thinning or complete loss of hair. Hair loss is very common in pets and is one of the main reasons for . Partial or complete alopecia (or hair loss) is commonly seen in dogs and can be due to a variety of conditions including skin infections, allergies, and endocrine . Hair loss in dogs is a common complaint, especially on the back. Some breeds of dog are more susceptible than others such as Greyhounds, Terriers, Whippets, . Oct 26, 2017 - Some hair loss in dogs is common but large amounts of dog hair loss may be a concern. Read more on common causes of hair loss in dogs, .