When The Pooch comes in from outside, he goes straight to the cabinet and gives me his paw before I can even say "Give me your paw" - he might even give you two paws and he will hold it until you throw the treat in the air. It's his one and only circus trick (so far) - He is very treat motivated. So I did a little experiment tonight - would he give me his paw and hold it while I took his picture? The answer is a resounding YES! Don't worry, he got his treat after my experiment:-).
*If you think dogs can't count, try putting three dog biscuits in your pocket and then giving Fido only two of them. - Phil Pastoret*