Not to hi jack anything but the best catchdog I ever had was a rottweiler gyp that weighed 80lbs she was was well behaved. Never needed a lead she would run next to me when I told her to go catch it she would no matter what it was. Hog, cow or person. When you told her that was enough she would back off and come back and stand right next to me. Loved that dog.
back when I had a few airedales this guy had a rott female he wanted to try. put her in a bay pen and she caught...took here to the woods and she was hunting on her first tme out. The airedale I had bayed a boar and she went to him like a rocket and both were caught solid...