It is brutal. But the humans have a say
in their sport, dogs and horses dont.
AT least they call the dogs off
when a guy gets hit and goes down
and the other guy gets on top... they stop the fight.

In boxing a guy can get his head accelerated multiple
times during 12 rounds and get really heavy duty damage.
Standing 8 counts, and you cant jump the guy, leads to
more head damage imo.

Someone is gonna get killed in MMA at a high level.
Just like in boxing.

Good boxers in the lower weight
divisions are tremedous athletes. They have to have
hand speed, foot speed, and tremendous endurance.
Its amazing to watch really good boxers that dont get
hit.