Yeah, and since grizzlies are subspecies of brown bears, it's worth mentioning. Oh, and the original question was Polar bear vs. Siberian Tiger, so there's no need even mentioning a grizzly.
A tiger running 60 mph... isn't that the top speed of a cheetah in sprint, which not even it can maintain long?
The sheer body/ muscle mass of a polar bear is almost unrealistic. The can flip SUV's with little trouble. Can a tiger do that?
Polar bears are the largest land carnivore. They can weigh over 1000 pounds. The siberian tiger would be lucky to weigh close to 400 pounds. The tiger may be much faster, but in a fight once the bear got a hold of the tiger it would be over. Maybe if the tiger sneaked up on the bear and pounced on it from behind it would have a chance of winning. I'd still go with the polar bear though.
your talking about weight bro....and being big isnt everything... tigers prey on brown bears...do you see any bear that actually lives to kill tigers??? tigers have shredded body cuz they actually work out alot more than bears...i just see a tiger who can carry 3x his own body weight and run with it shows tigers arent weak animals...with the speed to go with it...deadly combo.
Polar bears actively pull 200-250 pound seals out of holes in the ice with there mouths. He gets a 300 pound tiger in there? Done.
Clearly the only way to settle this is a real fight. I'll bring the polar bear, but someone's gunna have to get their hands on a Siberian tiger.