Gorillas were large hominid native to the planet Earth.
Charles Tucker owned a book called The Gorilla Hunters. (ENT: "Cogenitor")
During the Farpoint Mission Geordi La Forge told a joke about a Ferengi in a gorilla suit. (Star Trek Generations)
In 2367, the skulls of a juvenile male and a female gorilla were displayed with the skulls of other primates in Doctor Noonien Soong's laboratory on Terlina III. (TNG: "Brothers")
Jack Ransom described mugatos as "horned gorillas". (LD: "Temporal Edict")
The Drakoulias was designed to be a cross between a polar bear and a gorilla.