So have cats.
Lions and tigers in circuses and shows only go back to the 19th Century.
I have to call BS on that. Wild cats were captive in gladiatorial games and "tamed" in circuses around zero AD/CE.Unless you're claiming that the tales of early Christian martyrs being thrown to the Lions are pure fiction. But hey, what's a couple of millennia between friends?
However, Einstein, the qualifier is "IF" and they don't if well-trained and well-socialized.
You're simply wrong there. Animals, including humans, sometimes wig out. No matter how well-trained and -socialized.
I have a friend who was nearly killed by a German Shepherd. From a good bloodline, a reputable breeder. It was a trusted family pet until it flipped one day and almost ripped her throat out. It came out of nowhere. I never knew that dog, but I met his brother -- and he was loving and loyal as a dog could be.
Unpredictable. That's all I'm saying. Best to make sure we can ensure that we can control them if that happens. And that a human will be held responsible in that exigency.
Ri-i-i-ight... Dogs are SO-o-o-o unpredictable that there is hardly a day that goes by that I don't hear of a German Shepherd dog leading a blind person right into a city bus. And, of course, the police figure they can't be trusted to go after an escaping criminal, preferring instead to chase squirrels and rabbits! People in the rescue business also find them worthless and unpredictable, so lost children, hikers, avalance and earthquake victims should just be always considered left lost. And their unpredictability has really never sniffed out bombs, drugs, weapons or other contraband. Additionally, the military have absolutely no use for dogs as their unpredictability always leads them right into ambushes--especially in places such as the jungles of WWII, Vietnam, Korea, and Iraq.
Dogs have saved a million more lives than they've ever taken!