The radiator bed

Not many homes have radiators now, but in those that do, the radiator is a prime sleeping spot for cats, since it’s a nice source of moist heat. Cats willingly sleep on top of any heat source that won’t actually burn them.

This does not harm them, but it does tend to dry out their fur, especially on the belly, making them shed more. If the cat is a radiator sleeper, a thick towel or small blanket atop the radiator is a good idea to prevent belly dryness.