Griffy is a big large (90# plus) dog with the exuberance of a puppy. He needs a really large yard. He would do best on a farm or rural property where he can wear himself out. Griff knows some basic commands, but usually chooses to ignore them, and chase a ball or look for a toy. He is a very smart dog, and will benefit from a qualified trainer. We are not sure of his genetics. At first we thought Lab/Shepherd, but it just took one “nudge” by Griff to realize this boy is solid! Solid muscle. Built like a brick wall. Didn’t feel anything like a “nudge” from a Lab.