Dogs bury bones and then relocate with smell........................
Same with the laundry. If I went in to do laundry, he would sit outside the doorway behind me and start getting a little anxious. So I would step out for a minute to give him that window of opportunity and he would go in to the pile and get his treat and run off to another room. He didn't have to sniff them out. He knew right where he stashed them.
I also kept his frisbees in a backpack in the closet by the front door. The moment I opened that closet door, he was at my side waiting for me to pull it off the shelf. He did not wait to see the frisbees and sometimes he was disappointed to see that I was merely getting a coat. But he knew that's where his frisbees were and each time he lobbied his hardest to sway me into taking him out for his favorite game.
But thinking about all this, how would "experts" explain dog's dreaming? Isn't there memory at work while dreaming?