Cool experiment
One thing I need to mention. My oldest dog is a male neutered papillon, who is 8 years and 11 months old. I taught him to give me the paw that "matches " my hand. If I extend my right hand and say "paw", he gives me his left paw. If I hold out my left hand and saw "paw", he gives me his right.
TAG:
test 1: left
test 2: left
test 3: left
male/neutered (9 month old papillon)
(If it helps, I also had him heel with me and noted the first foot he used when starting to walk. The results were left, right, left. Interesting!)