What Breed is My Dog?

I adopted my puppy from a local shelter. He is 5 months old now. I was told he was a Rottie mix, but I don't see Rot in him. I have been told he looks more like a Black and Tan mix. He loves to play with chew toys and loves the outdoors.

He definitely thinks he is a lap dog and is very loyal and is always with me anywhere I go in the house. He hates to be alone. Any comments would be greatly appreciated. Thank you!

By kspence98