UPDATED: NOW WITH PICTURES

I got my dog at a shelter, and they had no history on him; he was around 3 months old when I rescued him. They weren't sure exactly what breeds he was comprised of, but were guessing black lab and rottweiler based upon his appearance. He's black with tan accenting, so I can see the rottie. However, he's thin (not underfed, just naturally slim).

We were expecting him to grow quite large given the two breeds, however he's now around 16 months old and he seems to have maxed out at 50 pounds and around 18" tall. Any idea what ancestry he may have that would look something like a black lab/rottie mix but only be 50 pounds?

He's a wonderful dog and I love him dearly, so if there's a "Super-awesome-sweet-handsome lil' guy" breed, that's probably it.

Thanks for your time!


http://i531.photobucket.com/albums/dd355/MarcRocks13/dane1.jpg

Him around 4 months old.

http://i531.photobucket.com/albums/dd355/MarcRocks13/db2.jpg


Around 6 months with my other dog, a border collie.

http://i531.photobucket.com/albums/dd355/MarcRocks13/dane2.jpg

A closer picture when he's a little older.