From the New York Times

Warm Nights, Cold Noses

At least one of us, living here in our home, thinks this is a brilliant article and everyone should try letting the dog up on the bed. Or the cat .. as if you could keep a cat off if you wanted to !

I have done both and can attest to the fact that you will sleep better .. although there were times when the tiny cat managed to push the humans all over to one edge.