When our dog is very tired he will sometimes grab a big mouthful of the nearest cushion or blanket, and paddle away at it with his front paws. It looks a lot like a nursing puppy, and seems to be a comfort thing.
Anyone else's dog do this, and do you know why? Does it indicate a problem (e.g. removed from mum too soon? His breeder was vv reputable but quite old school, so I wonder a bit). Or is he just a particularly soppy character?