No dogs on the bed in our house. But only because I can't deal with the hair. They are allowed on the lounge when ever they please at the moment because it is a shitty old one. I will be buying them some tough beds though so they will be back on the floor shortly I think. If they didn't shed so much or get so smelly they would be allowed on all the things.
Its up to you, as Hya and MAC said.. they are opportunists.