For a Boer bull owner I would recommend Rottweiler’s. They don’t grow as huge but still gets around 60 kg 70 kg if you bought a monster. Very intelligent dogs but you have to earn it’s respect.
Part of the family.
They don’t bite or chew on anything in or outside the house except rubber toys and stuff.
They love walks.
Eats like a machine.
Challenges its owner in strength.
Becomes over protective.
Most Rotties are perfectly fine around strangers if you except them into your home but some have a tendency to feel threatened when touched by someone they don’t know or trust. These aggressive breeds immediately snaps without warning. It’s good to know the history of your Rottie’s parents and so forth before you buy one.
They have the same live expectancy of a Boer bull which is around 10 years.
Hip and back problems are common at old age.
I’ve owned 2. We had to put down the male due to age. They really become part of the family because of their persona. I’ve been in a lot of dog training sessions with the male (Jasper) where they help you teach the dog to attack on demand, stop on demand run obstacle courses etc… The strength comes from a bear like built that has a lot of upper body weight. When they attack their key is to use this weight to force the opponent to the ground. This allows them to reach the neck easily.