What's the going rate?

So the other night while Bob was playing with Quincy we noticed that Q stopped suddenly and began running his tongue in and out of his mouth.  Thinking that he found a spec of something off the floor A.G.A.I.N., Bob grabbed him quickly before he could escape and did the normal finger sweep in Quincy's mouth - just like you probably would do with a baby. 

Much to our surprise, Q wasn't eating something off the floor - he was actually in the process of losing a tooth.  I'm not sure if Quincy was going to swallow it or not but with Bob to the rescue, we were able to retrieve it.  We're not sure what the going Puppy Tooth Fairy rate is for a puppy tooth...maybe a big ole doggy biscuit, perhaps a new toy, or maybe just a pat on the head?

Any suggestions?  :-)