True, but they can be a bit aggressive, no? Have an old friend that has three (King, standard and short; male, female, male respectively), and watched one day (while calculating dope for a match at the kitchen table) as the three went ape shit over attention competition, which led to an all out fight with teeth and blood flying. Long story short, when my friend and husband stepped in to break it up, they were so caught up in the melee, that she had one of them bite her leg by accident. Accident or not, she ended up with several deep puncture wounds to her Achilles's heel, and two of the dogs with torn ears and puncture marks on bellies and legs (the female is not to be trifled with; when she gets going, she literally goes berserk).
The big male (easily 100lbs) is pretty docile, but once riled up, he doesn't stop either. They're good dogs, and normally well natured and affectionate. But they can be a handful if you're not careful.