Heat-seeking is right! Someone got very grumpy going out in the cold yesterday night for a pre-bed constitutional outing (I'll give you a clue - it wasn't me, and all the rodents were tucked up in their nests). When we're inside he's either here:
IMG_0607 by
vectishams, on Flickr
or here...
IMG_0620 by
vectishams, on Flickr
IMG_0621 by
vectishams, on Flickr
I think he could get closer to the heater, but only with specialist tools!