My dad is recently retired, is about to move to the countryside, and is considering getting a dog. He’s very fit and active, walks for several hours a day, and would like and intelligent and active dog that will enjoy accompanying him on hikes and learning tricks (perhaps agility too). He love the look and intelligence of border collies but i’ve heard they can be a bit nervy/unpredictable. There’d be no children in the home but visiting grandchildren over 7 would occasionally be there. He’s not owned a dog before but has worked with them and is very serious about training and proper exercise etc.
Wise dog owners, any ideas?