A character or a monster is considered Large when he, she or it stands 8 to 16 feet tall while weighing from 500 lb. to 2 tons. Such creatures usually take a 10 ft. square of place and have 5 ft. reach if they are long and 10 ft. reach if they are tall.
A Large creature gets a -1 size penalty to Armor Class and attack rolls, a +4 size bonus to grapple checks and a -4 size penalty on Hide checks. A Large creature’s carrying capacity is twice as good as that of a Medium character (thrice for quadrupeds). A Large creature uses larger weapons than a Medium character.