My wife and I adopted our little boy Rocco from North Shore and he was 7 weeks and 6lb. We were told he was a German Sheppard and Collie mix. When we first took him home he kinda looked like a german sheppard since he had a lot of black/grey fur. Now he is about 5 months old you can see he is definately now German sheppard / collie mix. I noticed lately he is beginning to drool a little, his nose is not long and narrow at all, it is short and stocky, he is not aggressive at all, does have burst of energy but overall loves to sleep, just sit outside with me, etc. I think he might be part mastiff. So I went online and came across a Engish Mastiff / Norweign Elkhound mix, and our baby looks just that mixed breed.
Here are some pics: pictures 1 & 2 are when he was 7 months old
pictures 3, 4, & 5 are recent ones (5 months old).
Also are there any good sites that you are aware of that shows a lot of mixed breeds?