[OwnedByJezebel]

I would tend to trust the breeder.

Some disreputable breeders have been known to say that a puppy is OLDER than what it really is, just to make the buyer think that it will grow to be a very small adult. Like, say, telling the buyer that the 2 pound pup is 4 months old, when it is really 2 or 3 months old, so the buyer would naturally think that they are going to end up with a very small adult.

But I don't have any idea what she would have to gain by saying that the pup is younger than it's actual birth date.