The term 'Cause of Fur Loss' can be summarized by the five-letter word 'Mange'. Mange is a skin disease caused by parasitic mites that burrow into the skin of animals, causing severe itching, hair loss, and secondary infections. It is most commonly seen in dogs, cats, and other domestic animals, but can also affect wild animals such as foxes, coyotes, and wolves. Treatment for mange includes topical medications, antibiotics, and anti-parasitic drugs.