Dug is a light shade brown animatronic dog with a peach-like colored snout. He has two long, droopy ears, each with a peach-like colored inside. He has two rosy red cheeks, and has freckles on either side of his snout. He has blue colored eyes with black eyebrows over each. His stomach is also a peach color, which sports three black buttons. His eye sockets are bigger than his eyes.
Dug starts in Party Room 1, but he is not seen on the camera. He then moves to the office hallway. Unlike the other animatronics, he is not fooled with the Freddy Mask; instead, the player has to play sounds in Party Room 1 to lure him there.
- Dug is based on a character from the Pixar film UP.
- Dug is mentioned on the Night 4 phone call.
- He appears in the one of the minigames in The Return to Freddy's 3.
- Dug has appeared in one game, and has the fewest references to him.
- He was promised to return in The Return to Freddy's 5, but no news have been given about him .