That's so strange that you mention this.
We have one toy poodle and 3 Boston Terriers. Pedey, the poodle is only 7 lbs and the Bostons are between 15 & 20 lbs. Pedey has deformed back legs and doesn't get around as well as the others.
I have never seen a dog do what he does.....
When we give them treats, he hoards his. He doesn't eat it and walks around with it. If anyone goes near him he growls at them. We've come to learn that Pedey has dominance tendencies. He plays the victim, but he's actually the instigator in many of the squabbles that break out. He looks like such a pittiful little thing, so you feel sorry for him, but in fact he's controlling them all! What a little stinker!
He will also run around and try to bury his treat. He gets all frantic and whines when he can't find a good place and go back and remove it from it's original place and hide it somewhere else. Does anyone know what that's all about?