Gorilla

The gorilla is a synthetic creature found in the Bioscience section of The Institute contained in terrariums.

Background
They are a pet project by Clayton Holdren in an attempt to recreate pre-war gorillas. There are two specimens, and both are actually Synths designed in the form of the Silverback Gorilla. This is revealed upon talking to Clayton, who brings up the gorillas while introducing the Sole Survivor to Bioscience during Institutionalized.

Characteristics
The gorillas are largely passive to the player and wander around their terrarium. However, during A House Divided, their enclosure can be opened, where they will be hostile to everything, including the player.

Biology
They are synthetic gorillas which are said to be very aggressive.

Appearances
Gorillas appear only in Fallout 4.