I know it is hard as a puppy (he is 3 months old) but does anyone have a guess as to what he is a mix of?

He looks like maybe a Lab/German Shepherd mix or Lab/Rottweiler. Definitely Lab, though. He's really cute, too! I love his little ears. It's hard to say where any of his traits come from, since many things, like his slightly curled tail, semi-prick ears, and short black and tan coat, can crop up in any number and combination of breed mixes. I guess it doesn't matter so much as long as he's a great pet

yea hes doing great so far. iv'e had him for only three days and the housebreaking is going really well.