Are Grizzly bears and Brown bears the same?
Grizzly bears are actually a subspecies of brown bears (Ursus arctos horribilis). The difference is regional:  Bears found inland are referred to as "grizzlies", while bears found on the coast are known as brown bears.
Os ursos-griz e os ursos-marrom são o mesmo?
Os ursos-grisos são na verdade uma subespécie de ursos-marrons (Ursus arctos horribilis).