Generally speaking, adult dogs sleep about 50% of the time a day. Every dog has a different depth of sleep. For dogs, a few naps can restore lost energy. For [puppies], they sleep almost all day, and as they get older, their rest time will gradually become balanced and stable.

kitten

[Cat] can sleep 13- 18 hours a day on average; [Older cats or kittens] can even sleep for more than 20 hours. However, the careful shovel officer will find that the cat sleeps very lightly. They wake up immediately after someone leaves, which is also related to their hunting instinct. They spend most of their time in "catnap" and it takes about 4-5 hours before they really fall asleep. If a cat grows up with humans, it will take a long time for a safe cat to "sleep to death"