I had to do the test four times. I voted treat because two out of my four went for the treat. Here are the results:
Muffin, being the Diva that she is went for the dollar and ran off with it.

Skittles is
ADDICTED to anything that results in a game of fetch. So, he grabbed both the sock and the toy and brought them both to me.

Cupcake and Ginger are little piggies.

So they ate the treat without question and sniffed around for more.