The Diamond dogs are a strange race, as happy below the earth as they are above it due to their ability to dig through the ground like a Unknown. The Diamond Dog is generally taller than a pony mostly because he prefers to stand upright; perhaps it is because that lets him carry more gems in his long arms.
In my travels I have met many interesting Diamond Dogs. They can be fiercely loyal or treacherous curs, lovable and infuriating, but there is one thing that unites every one of them: an insatiable lust for gems!
PLAYING A DIAMOND DOG
Starting talents: Burrow(D6) and Special Skill: Tracking (D6)
Quirk : Choose one
Source : The bestiary of Equestria p.25 and p.117