The one thing I've learned since coming here and looking at everyone's pics is that Yorkies are a lot like people: no two are alike and they're all different, while still being a Yorkie. There's the size thing, then the coat type thing, then the ear thing ...
Historically speaking, Yorkies are a "bred down" breed, meaning their genetic heritage comes from larger terriers. So there will *always* be pups that are genetically destined to be larger than the "standard", which is an artificial guide that hopefully applies to your pup - if that's what you want.
The breed characteristics are charming, and many people are perfectly happy to have all that charm in a slightly larger package
. I like floppy ears: I think they're endearing, especially with those alert eyes.
One thing you may consider though: perhaps Derby is a Silky. They're larger, but in many ways look like Yorkies. One thing I've noticed is the nose: my dogs have very tiny noses in relation to their faces and snout, whereas Silkies seem to have a more prominent nose, more like you'd expect to see in a dog. That may be an erroneous observation ... nose size may just be another difference between individuals.
In any event, Derby is certainly a charmer. I love his smile, and the Devil lives in his eyes ... which is a good thing in a terrier
