Rockruff won't evolve into some shittyt, rocky looking man-poodle.

He will evolve into a sleek, diamond covered wolfy-kun that'll make any of your fantasy gf's jealous.

It's so simple. Just look at it's neck.

>diamondos necku
>rockruff
>rough
>diamond in the rough(ruff)
Hope I could elucidate you faggots a little. Rockruff WILL evolve into a diamond dog that glistens in the MOON(psychic/rock?) and shines in the SuN(steel/rock?)

One of the leeks said split evolutions. Maybe it is true? If so then it's evolution would be dependent on whatever version you get.