Under normal circumstances, a kitten will slowly open its eyes about a week after birth, and after opening its eyes, the kitten can begin to see the sun. This is because the growth and development of kittens is Sun exposure is needed to promote the absorption of calcium and vitamin D to help kittens grow and develop rapidly. ​​​​​​

However, kittens should not be exposed to the sun or basked in the sun for a long time. Kittens are relatively fragile. Exposure or basking in the sun for a long time can cause heat stroke or dehydration, so it is best to avoid arriving at 11 noon. The sun is shining brightly at three o'clock in the afternoon.

Usually, kittens should choose to bask in the sun in the morning or when the temperature is moderate, and the time is best controlled within 10 to 20 minutes. If it is a weaned kitten, it should also be given appropriate water while basking in the sun.