The Western Gorilla resembles a real life western gorilla, with two muscular arms covered in dark brown hair, a six pack lining its chest, a squarish head with dark brown hair and large square face and two short stubby legs. Its back is slightly faded representing the silvering of the fur on the back of real life western gorillas.
The Western Gorilla was released in the original release, version 1.0.0, on the 22nd of June 2016, along with Savannah and all Savannah animals, Jungle and all other Jungle animals, and the Sky Zoo.
The Western Gorilla's description references its in-game behaviour.
The Baby Western Gorilla's abilities also references the Western Gorilla's in-game behaviour.
The second sentence of the description has been linked to Harambe, a western lowland gorilla shot and killed in Cincinnati Zoo after a 3 year old boy fell into its habitat, although the description had been written before the incident occurred.