Chicago residents are reporting mangy coyotes as zombie dogs. Sarcoptic mange causes the coyotes to lose hair and develop infections. The infections can degrade their eyesight, which may cause these normally nocturnal animals to become active during the day.
Source: Bellevue News-Democrat, August 31, 2017.
Police are warning persons that mange is contagious to animals. It is contagious to humans, as well.