My outside cats are have a pattern of eat, sleep, play, hunt, eat, sleep etc.
Maddie, inside, is different. I believe she sleeps all day too, but she does sleep some at night, so I think she is watching the outside cats play. I also think she watches TV,cooks an omelet and reads the paper.
I live alone and my mom wants me to take my dog back to stay with me at night for a watch dog.(I had to stay with them awhile and now my dog, Angus, won't leave them)
I told her that I had a watch kitty, because Maddie is up all night and she would definitely tell me if someone came in.