Why Do Cats' Eyes Change Shape Three Times a Day?
It's often said that a cat's eyes change three times a day: round in the morning, linear at noon, and round again in the evening. This is a normal phenomenon and it happens because a cat's eyes adjust to changes in light conditions. Why Do Cats' Pupils Constantly Change Shape? 1. A cat's pupils aren't static; they change in response to the intensity of daylight or artificial light. When light is strong, the pupils become narrow slits, while in dim light, they expand to become large circles. This explains why you might see round pupils in the morning and evening when light is less intense, and slit-like pupils at noon under bright sunlight. This adaptation allows cats to optimize their vision in various lighting conditions. These changes are due to the muscles around the iris that contract and relax. 2. Cats have very large pupils, and the muscles controlling these pupils are exceptionally strong. Their 'sphincter' muscles have an incredible ability to co...
