How do your hamsters sleep?

[BluerayDarkes]

As I'm interested in how everyone's hamsters sleep.

Lunar - Has a plastic house and a wooden house, so far has slept very little in the plastic house but taken up residence in the wooden house. He used to just bury himself in all the substrate, now he buries himself inside the wooden house.

Cindy - Has a plastic house and a wooden house. She used to sleep a lot in the plastic house, recently she has decided to switch houses and now sleeps in the wooden one. Not really sure why but maybe she fancied moving.

Yummy - Has a rat sized sputnik. She hates it she doesn't even go inside it, she went in twice and that was it. Yummy prefers to burrow down under the low platform she has, and makes a nest under there perhaps because it feels more enclosed. She used to just make nests in corners.