Just the other day, my Dexter was walking around whining and he had something in his mouth. I called him over and took it from his mouth. I trained my dogs first thing to just let go of whatever they have, or they just drop it into my hand. Well he had a GRAPE!
My brother fed my nephew some that morning and one must have been on the floor. I was sooo upset, but thankfully disaster was averted and not only did he give it to me, but he didn't even so much as try to eat it. I think he was looking for a place to bury his 'treasure'. PHEW!