What Breed Am I?

My boyfriend and I took in a stray puppy in April.. Little did we know he was going to be a small horse in just 4 short months. A friend of ours was getting off the interstate and this little guy was sitting in the off ramp.... needless to say with him being a dog lover himself (has 5 dogs) he couldn't keep him and wanted to find him a good loving home... and he found himself here =) we are kind of tossing up a few ideas. Our friend thought he knew the neighbor of where Peyton came from and if that is so he would be an American Bulldog/Huskie mix... which I can see... but with further research online, looking at pictures/videos... we think he might actually be a Great Dane/German Shephard mix. He is a crazy dog, loooves to run around and play, is definetly a puppy still because he chews up everything. He is just now getting his big dog teeth in and his testicles haven't dropped all the way. Hes very loveable and sometimes I feel he needs more attention than we can give him because we work full time jobs but different shifts. What do you think??

These are the most recent pictures we have
http://www.flickr.com/photos/6631436...in/photostream
http://www.flickr.com/photos/6631436...n/photostream/
http://www.flickr.com/photos/6631436...n/photostream/
http://www.flickr.com/photos/6631436...n/photostream/

This was him in June
http://www.flickr.com/photos/6631436...n/photostream/

May
http://www.flickr.com/photos/6631436...n/photostream/

April The day we got him
http://www.flickr.com/photos/6631436...n/photostream/

Please help!! Only Jule 4th he weighed 45 pounds.. now hes at least 65... Think we should prepare for a 100 pound dog?? =) Thanks in advance!

I definitely see the Great Dane in him - with the smooth coat and the size of those paws! I don't see Shepherd, or even Husky in his coat, but there's obviously something else in there to give him that coloring AND the ears that are having a tendency to be up ears! Maybe Dane, Lab, and mystery?

I would absolutely plan on having a 100-pound baby, but just train him right now on walking on a leash without pulling, and how to NOT jump on people ("4 on the floor!"), and you'll have a great dog on your hands, no matter what size he ends up to be!

He may be Pit Bull/Great Dane. He is super cute.

This is Karmella she is an American Pit Bull Terrier at the shelter where I work, she is roughly 50 lbs. full grown though at 4 years and definately does not have dane in her. She is all APBT. :)
http://montanapets.org/bas/pictures/11-D2828.jpg

He reminds me of my friend's greyhound. Greyhounds aren't too common as strays though. Since labs are the most common breed all over there is a great chance there's some lab in there.

Thanks everyone! I lost my log in information and had a crazy month!!!