This is Toby. We've had him for about 5 years. Rescued "lab mix" puppy and we never got to see any of his littermates or mom. He's about 55 lbs. Will run in circles like a greyhound and then just collapse. When he was younger he displayed some nipping/ herding instincts and even points occasionally. He has a deep labby bark, definitely not a hound bark. Friendly like a lab but smart and obedient like a BC.
We've settled on Border Collie/ Hound but i'm sure his parents were mutts as well. Ideas?