It's called an elliptical pupil, it basically is an evolutionary sight failure fail safe, though they are susceptible to cataracts it keeps there vision sharp and it allows the pupil to open and close much faster than our sorry little round pupil hehe, it's also used in there night vision, but I'm not sure how
They change because when the cat is focusing on a specific object the pupil gets bigger to keep focus, when the pupil is a diamond shape that then means that the cat/kitten is not focusing on something particular
Answer from Auraya121: Yes, cats can see very well at night. On a pitch black night where you can't even see your hand in front of your face, a cat will see more clearly than you would on a brightly lit moonlight night.
In bright light, a cat's pupil will narrow to a slit to stop too much light getting in, which can be harmful to its eyes. In dim light, the pupil will get much bigger to let the light in, making it easier for the cat to see in dim light.
The human eye and the frog eye are both socketed, which means that they do not protrude from the skull. Some people think that frogs are colour blind -- actually, they have the same colour reception as a human. Also, the frog has its eyes on the sides of its head, plus it can see in the dark or very dim light.
The long hairs above a cat's eyes are called "eyebrows" or "forelock." They serve to protect the cat's eyes from dust, debris, and sunlight. These hairs are also important for a cat's facial expressions and communication.
the cats eyes are blue, and the pupil is small and they shed a lot
Because they are big and they look like cats.
Pupil of the eye is called "नेत्रक" (Netrak) in Hindi.
Pupil
its called your pupil.
Its called a pupil.
The homophone of "pupil eyes" is "people lies."
The pupil.
Their eyes aren't glowing but, they are reflecting light which causes them to have the appearance of a glow. The light reflects in this way because cats can see in the dark. They need this ability because they are nocturnal. Cats have amazing night vision and this is because of their pupil shape and the ability of the pupils to dilate so large.
It's called the iris.
Cats eyes
They change because when the cat is focusing on a specific object the pupil gets bigger to keep focus, when the pupil is a diamond shape that then means that the cat/kitten is not focusing on something particular