Why our cute and funny cats sleep so much, and what they think when they’re sleeping? Cats can sleep just as much as 16 hours per day, and older felines spend even a lot more time at relax — even 20 hours a day. That sleeping habit is usually a result associated with the cat’s advancement, nutritional habits, plus physiology. Cats have got to hunt to be able to eat, and the particular stalking, chasing, plus killing of victim burns a great deal of energy. Resting helps cats save energy.