Made a very similar dog bed for Bella loosely based on this one. I used left over wood from my wall hanging I made listed on this board, so the wood stain and design match the decor. I added two standard bed pillows with leopard print covers on them.
Old wooden barrel can be used as pet house to accommodate your dog or cat in garden. Barrel would nicely blend in the garden. However you need some support work for the barrel to stay where you put it and not to roll away