You would have to be very unlucky not to find a hair in there, get on thee hands and knees and have a gander next time
Looks more like where a deer has had a roll around, rather than a 'bed'. The grass is all squashed in one direction and not pressed flat to the ground, indicating that i wasn't there long. Usually where they have bedded down for a while the grass is bent in all directions, and the grass is more squashed..