Geodude usually sit still on mountain paths or in caves, which is why they are often mistaken for rocks. Geodude uses its arms to climb steadily up steep mountain paths, hoisting itself over. Geodude also uses its arms to swing its fists around when angered, such as when it is stepped upon carelessly. Geodude are proud of their sturdy bodies and bash against each other in a contest of sorts to prove whose body is harder. When Geodude sleeps deeply, it buries itself halfway into the ground. Once buried, it will not awaken even if someone steps on it. In the morning, Geodude rolls downhill in search of food.
Geodude can be most often found on mountain trails, fields, under rocks, or in caves. They are a common sight in Kanto and Johto.
This Pokémon was unavailable prior to Generation I.