I think this thread desicively proves that dogs are awesome individuals, all of them!
Swan, Loki does hi-fives the same way! Though I always figured that it was because he's too short to do them with one paw.
Just got done watching another one he does. I gave him a pig ear strip, and he carried it over to his bed on the floor in my room. He then proceeded to 'dig', put the strip down, then start 'pushing dirt over it' with his nose, occasionally pressing down.
Finally he just flipped his blanket over it, did some more burying, and hopped up on my bed with a "You didn't see that." look on his face.
Silly puppy.