Dinky served as a roadside attraction before the Great War. Now the construct houses a pair of snipers, Manny Vargas and Craig Boone, taking shifts defending the town from the vantage point of Dinky's mouth. Manny covers the day shift and Boone covers the night shift. If approached, each sniper will shirk conversation, instructing the Courier to speak with them later.
Dinky is situated along Highway 95, visible from a distance due to its height.  The dinosaur holds a thermometer, having taken a bite out of the top, that advertises the motel and amenities such as color television.
The structure can be accessed from the left or right of the Novac fence. A door and set of stairs on the side of the dinosaur is the entrance to Dino Bite gift shop. Another interior set of stairs provides access to the mouth. There is a room behind the counter containing rocket souvenirs and the unique weapon, That Gun. The motel itself is located behind Dinky, across the courtyard.
- Cass states that when she first saw Novac, she thought Dinky the T-Rex was a giant gecko.
- Follows-Chalk also references Dinky when asking the Courier if there "really [is] a giant thunder-lizard people live inside."
Behind the scenes
- The Dinky the T-Rex closely resembles the real world Tex the T-Rex, located at the Shan-Gri-La Prehistoric Park and Museum in Henderson, Nevada.
- The landmark also resembles Mr. Rex, one of two large biomorphic buildings designed and constructed by sculptor Claude K. Bell in Cabazon, California. The name Dinky refers to Mr. Rex's counterpart Dinny, although the real world Dinny (pronounced Diney) is a Brontosaurus as opposed to a Tyrannosaurus rex.
- Cass: "Named this place after the hotel. NoVac's the hotel, not the lizard."
- Fallout: New Vegas Official Game Guide Collector's Edition p. 410, Dinky the Dinosaur's Mouth: "Depending on the time of day, you’ll encounter Manny Vargas (days) or Boone (nights) at this location."
- Fallout: New Vegas Official Game Guide Collector's Edition p. 410, Manny Vargas' room: "The sniper in the mouth of Dinky the Dinosaur that watches over Novac during the day is Manny Vargas."
- Fallout: New Vegas Official Game Guide Collector's Edition p. 410, Craig Boone's room: "The sniper in the mouth of Dinky that watches Novac at nighttime is Boone. This is his room, and if he’s in it, he tells you to get out, and meet him up in the mouth at 9 PM."
- Cass: "Can see Dinky for miles, good landmark."
- Fallout: New Vegas Official Game Guide Collector's Edition p. 25: "Novac [5.18] is worth visiting for more than just Dinky the dinosaur; you can stay at the motel, and use the Workbench in town, as well as trading with vendors that wander down Highway 95 to reach here."
- Fallout: New Vegas Official Game Guide faction profiles, p. 43: "Watching over them is the landmark of the area: a giant fabricated tyrannosaurus rex biting off the top of "The World's 2nd Largest Thermometer". The interior of "Dinky" also serves as the city center (a converted gift shop from pre-war times, with a sniper's nest in Dinky's mouth). Dinky is the "attraction" that drew in tourists."
- Fallout: New Vegas Official Game Guide Collector's Edition p. 412, Dinky the Dinosaur: Dino Bite gift shop: "Up the steps, and into the stomach of Dinky, there’s a gift shop run by Cliff Briscoe."
- Cass: "First saw this place, thought the giant gecko was real. Read a book that giant lizards walked the earth like this one - might be a gecko this size."
- Henderson, Nevada's Shan-Gri-La Prehistoric Park and Museum