His plan of operations was simple.
He would walk into the shop with his penny in his mouth, well displayed, and a sweet and lamblike expression in his eyes.

Taking his stand as near to the cakes as he could get, and fixing his eyes affectionately upon them, he would begin to whine, and the shopkeeper, thinking he was dealing with an honest dog, would throw him one.
To get the cake he was obliged, of course, to drop the penny, and then began a struggle between him and the shopkeeper for the possession of the coin.

The man would try to pick it up.

The dog would put his foot upon it, and growl savagely.

If he could finish the cake before the contest was over, he would snap up the penny and bolt.