Are puppies smart enough to do this?

[plaster8]

We just got a golden retriever puppy, which we are housetraining. She gets a treat when she goes to the bathroom outside, which she has gotten pretty good at doing.

However, a couple of times tonight I could swear she just squatted for a few seconds, didn't pee, then came over to collect her reward. It was dark, I couldn't see that well, and I can't tell if she actually peed or not.

So are puppies smart enough to pull someting like that? Or am I just losing my mind in the midst of all the whining/barking/pooping/peeing? (Having a puppy has made me wonder if my wife and I will ever have a kid -- this is a LOT of work.)