Each morning at 5:30, I take my Lhasa Apso, Maxwell, for a walk. He has the bad habit of picking up bits of paper or other trash along the way. When he does, I command him to “drop it,” and he usually complies.
One morning, though, he absolutely refused to drop a piece of litter. So I told him to “sit” and then approached him to see what his treasure was. It was a $10 bill.