Cats have evolved as the "predatory hunting animal" equipped with great agility and keen senses. From almost the very start - a kitten of all species of cat shows instinctive behavior typical of hunters. Just like house cats, lions spend a huge amount of time every day licking themselves clean. It’s not just because they’re fastidious; they’re working to remove as much of their scent as possible.Yours isn’t the only cat that lounges around from morning to night. Domestic cats usually sleep between 16 and 20 hours a day; lions average right around 20 hours daily. And just like house cats, lions prefer sleeping during the day, becoming much more active right around the time people head to bed.