Mac is a 4 year old who was rescued at one and a half years old. He was full of parasites and had no training. We had an old Border Collie who despite her age whipped him into shape.
The B.C. (Bella) died and we were left with a well trained dog. Mac is medium to high energy who is calm if given sufficient exercise.
He is affectionate with family, a good watch dog, travels well, gets along well with other dogs but is prey driven on cats/squirrels. He does shed and if an immaculate house is your thing a Nova Scotia Duck Tolling Retriever wouldn't be good.
Overall a Toller is a great dog if one is committed to regular exercise and making him part of your family.