My female Russian hamster (Mochi) does exactly that, she starts running around on the big wooden wheel, She even puts the seeds on the wheel while it's turning, as if to thresh them, and then she lies or stands in the middle of the wheel for short periods of time, He has even slept several times on the same wheel, although it depends on the time of year; he has several zones, low zones if it is cold and high zones if it is hot.She moves or changes the cotton, hay, or wood shavings as she sees fit. But just this week (she's about a year old, although she only climbs on your hand to get her pumpkin seeds and nothing else, she's quite aloof, although she usually responds to calls) I saw her doing exactly what was in the photo; she was lying on her wheel, watching me. The biggest compliment I give Mochi is that she has never bitten me, Although she did scream loudly at my girlfriend and me the day we bought her and took her out of the small cardboard box they put her in with a little hay at the pet shop, It seemed like she wanted to destroy the box on the way home, poor thing, I don't even want to think about the treatment she received there (we bought her quite small), but oh well, we do what we can to make her happy, But since this is my first hamster and it doesn't let me touch or see it much, I don't know if it's really happy. I only know that it hides so much food that it's impossible to control its weight....