Are cats afraid of the dark?
Cats aren't afraid of the dark and don't need a light on to sleep at night. A dimly lit environment makes cats feel safer, and they prefer to stay in such an environment. Cats can see very well in the dark, so leaving a light on would actually disturb their rest. 
Cats don't need a light on when they sleep at night.
Cats prefer enclosed spaces and usually choose dimly lit places to sleep, which makes them feel safer. Therefore, cats are not afraid of the dark and do not need to leave a light on at night.
Cats can see their surroundings clearly even at night. Their eyes have a special structure, with an extra membrane called the choroid, which gives them daytime-like vision in the dark.
Whether kittens or adult cats, cats of any breed do not need to have the lights on at night to sleep normally. Leaving the lights on will actually affect the cat's rest, making it unable to distinguish between day and night, thus causing endocrine disorders.
