ATWOOD:
Potential Pups:
Atwood wrote:I'll be nice and actually help you guys out a little this time X3 Though really, all my hints are real hints, even the ones that look like just trolling
About halfway back through the thread, I said that my pup had already been correctly guessed by at least one person. That narrowed the field down to 16 pups that had had at least one person say they thought it was mine, regardless of whether they had good reasoning for it or not. Eliminating those who have already been claimed or that I have denied, that leaves you with these as possibilities:
Removing the bell-tail/tiny pup, the henna pup and the pup holding its breath, we're left with...





According to the hint that all five colors are visible on the pup, we can eliminate the two blue pups as possibilities.



Leaving us with these three; The egg pup and the green-eyed pup being the biggest contenders, as the horse style pup doesn't seem to fit most of the hints Atwood has left. Between Egg and Green eyed, its a hard call. I almost want to say egg because of the beach discussion, but I'm not sure it fits Atwoods style. THEREFORE;

I think this is Atwood's pup.
BENTLEY:

This one; the markings fit their art style, the hint about "I like my semi-precious stones" could refer to a dragon hoarding gems and gold.
BERKSHIRE:

The merchant hint makes me think of this one immediately.
PLUMA:

I did use to suspect the cracked/glass pup, but I think it might be this one; the gem on forehead theory by another user was posted pages back AND...Opals are iridescent....just like this pup's markings.
SKETCHI:

Suspect this one due to many users pointing out that it fits their art style
VAMPIRIC:

Because of the Cadet hint, and the fact that the Cadet went through a drastic change from its pup stage, I suspect this one.
That's all I got for now.