Found sweet Terrier dog!!

My Husband and I found a sweet male terrier mix dog. Greyish coloring. Pretty dirty, but no obvious fleas. Not starving. Terrified, but friendly. Blue collar. No tags. Rope tied to collar. Had to call Humane society. They picked him up Saturday night. Probably about 20 pounds approximately in weight. Sweet, Sweet, Sweet.... Knew how to sit and shake hands.... Found at intersection of San marco, Holly and Deep Dell....