Paleontologists doubt adult cave bears had any natural predators, save for pack hunting wolves and cave hyenas which would probably have attacked sick or infirm specimens. I will start to study bear anatomy and the bears weakest points I will then buy a life size model of a grizzly bear. Polar Bear > Kodiak bear > Grizzly bear I bet my 100$ on that a kodiak or a polar bear would destroy any lion or tiger you will bring. Another way to find out the difference is to look at the sexual organ of the male bear as it is easily visible. In many scenarios, Kodiak bear will win the fight because it is larger in size and with more stamina than the grizzly bear. Sabre tooth tiger vs cave bear who would win. document.write('