Who's been sleeping in my bed!

Foxy is always getting into Jonty's bed although Jonty doesn't seem to mind until it's his bedtime of course.
I could understand it when Foxy had the old cushion in his bed because it had a waterproof covering around the inside spongey cushion and made a crumpling noise when he was bedding down. Now they've got the new cushions there's no crumpling, crinkling, noises but he still jumps into Jonty's bed!
Their beds are in Marlanes room as I'm getting up every 3 or 4 hours to take painkillers and Jonty would be jumping into MY bed!