Is it normal for cats to sleep in summer?

Yes, it is completely normal for cats to sleep in summer. It is hot in summer, so cats need to adapt to the high temperature environment, so they often choose to rest during the day and take more activities at night. This is because cats' thermoregulation mechanism is different from that of humans, and the way they adapt to high temperature is to maintain normal body temperature through rest. In addition, cats' hair can help them relieve the high temperature, so they are more inclined to find a cool place to lie down and rest.