Definition: Acyanopsia is a medical term describing the condition where an animal's skin or fur appears to be pale compared to its surrounding surroundings. This condition can occur due to various factors such as cold exposure, exposure to direct sunlight, or certain environmental conditions. The definition of acyanopsia varies depending on the individual and the type of skin or fur affected by the condition. In general, it is a characteristic of animals that are not covered in any color other than white (the normal color for humans) or blue (a darker shade of blue). The term itself is derived from the Latin word "acyan," meaning "white" or "bluish."