Can cats see in the dark? Do I need to leave a light on for my cat at night?
Can cats see in the dark
A cat can see at night. Because in the dark, its pupils are wide open and are increasing the amount of light penetration as much as possible. Its eyes are like a well-designed camera, and the pupil in front of the eye is equivalent to the aperture shutter of the camera, which controls the intensity of light entering the eye (enhancing light entry at night).
The cat has a double-sided convex lens behind the pupil, which is equivalent to a convex lens inside a camera lens, and a retina at the bottom of the eye, which is equivalent to a photographic film. The retina is connected to the optic nerve. When viewing an object, the light first passes through the pupil into the lens, and the curvature of the convex surface of the lens can be adjusted so that the focus of the light falls exactly on the retina. There are photoreceptor cells in the retina that are stimulated by light and generate excitatory impulses that are transmitted to the brain via the optic nerve, thus producing vision.
Cats, belonging to the feline family, are divided into domestic and feral cats, and are more widely used as pets in households around the world. The ancestor of the domestic cat is presumed to have originated from the desert cats of ancient Egypt and the Persian cats of Persia, which have been domesticated by humans for 3,500 years (but not as completely as dogs). General cat: round head, short face, five fingers on the forelimbs, four toes on the hindlimbs, sharp and curved claws at the ends of the toes, claws retractable. Nocturnal.
Hunts other animals by ambush, mostly able to climb up trees. Cats have fatty fleshy pads on the bottom of their toes to avoid making noise when walking and not scaring away rats when hunting. The paws are contracted when walking to prevent them from being blunted, and will extend when trapping mice and climbing.
Can cats see in the dark
If it is in the complete absence of bright light, cats can't see anything. But because of the special eye structure, cats are more sensitive to light than humans and some of their prey. Therefore, cats usually catch mice at night and are the greatest natural enemy of mice. The pupil of a cat is a vertical line in a contracted state, but becomes a large circle or oval when dilated. Zoologists believe that in order to protect their eyes in bright light, cats contract their pupils into a thin line; when they come out at night to catch prey, they dilate their pupils to a full circle in order to let as much light into their eyes as possible.
Cats' eyes glow at night because there is a special reflective layer called the choroidal layer behind the retina, located in the upper part of the eye. When light from the outside world enters the eye in the dark, some of the light may not be captured and absorbed by the retina and reflected back, and the role of this layer is to secondarily reflect this light and gather more light on the retina to enhance its own vision in the dark.
It is estimated that the sensitivity to light is almost six times greater in the cat's eye than in the human eye, probably mainly because of the choroidal layer reflecting and gathering light. The human retina is above both the cone cells responsible for perceiving bright light and sharp colors, and the optic class responsible for perceiving dark light, precisely because they are more than rod cells on the retina. Human vision is the result of these two types of cells working together example higher.
Do you need to leave a light on for your cat at night
Each animal has a very peculiar function in its body. Cats have a habit of resting during the day and moving at night, and many owners of domestic pet cats worry that their cats will not be able to see around them when they are moving at night, so they think of leaving a night light for them at night, so is it necessary?
Cats do not need to leave a light at night for three reasons.
1, cats have a membrane on the eyes, you can clearly see at night.
2, the dark environment cats can rest well.
3, the night lights will make the cat black and white.
The cat's eyes have night vision, at night can clearly see what is around, if the cat open the lights at night it will not be able to distinguish between night and day.
Cats do not need to leave a light on at night, the specific reasons from the following three aspects to analyze.
First, the cat's eyes are covered with a membrane, and the peculiar structure of the eyes allows the cat's eyes to see clearly at night, so there is no need to leave a light on for the cat at night.
Second, even if the cat is active at night, it needs a very dark environment to rest, so that the cat can feel safe and rest well.
Third, if the cat is turned on at night, it will cause endocrine disorders and will not be able to clearly distinguish between night and day, which will have an impact on the normal life of the cat.
Many animals are able to see clearly at night and move around normally. So owners don't need to turn on lights for them at night at all.
Four kinds of punishment that cats fear most
Cats are very spiritual pets, they are spooky every day and often don't follow the rules, and often bring all kinds of unexpected surprises to their pooper scoopers. The naughty and mischievous meow master will also have the time to make mistakes, the cat is like a child full of curiosity, exploring the house every day, anything it finds interesting and wants to demolish. Encounter this situation, the pet owner should be slightly reminded of the cat, let it converge, do not let the cat develop the habit of demolition of the home ...... But then, when you punish the cat, these 4 taboos must not be committed, or the cat will be afraid, or even hate you!
Taboo one, put the cat in a small dark room
Cats are born liberal, it is very eager to be free, do not want to be bound to their bodies. So the cat will be very annoyed with all the things that tie up its activities, such as: leash, cat cage, clothes, portable box ...... When the cat makes a mistake, you can slightly shut down for a while, so that the cat understands that it has made a mistake, but never move to lock up the cat, this is to affect the mental health of the cat, and even to you! produce revenge psychology!
Taboo two, do not give the cat food
It is normal for cats to make mistakes, especially in kittenhood, the curiosity of kittens will be very heavy, see everything want to demolish the truth, and when it slowly grows up will not be so. Food is very important to cats, when you punish the cat, do not give it food, which is very difficult for the cat, and often do, will make the cat's diet irregular, affecting its health.
Taboo three, violent physical punishment of cats
Corporal punishment of cats is a very wrong approach to education, because cats are not as humane as dogs, after education, it can realize that they made a mistake and slowly corrected. If you punish the cat, it will only make it hate you more and more, become more rebellious, and will even try to retaliate against you!
Taboo four, throwing the cat out of the door
Many impatient pet owners, the cat is love and hate. For example: you buy a new sofa, a careless meow master's toys, some owners will throw the cat out in a fit of rage, which is a very bad move, once the cat is out, it is easy to panic and flee, the sofa is gone, the cat is also gone, it is really a big loss!
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