Species Encounter Type Level Range Probability
Onix Onix Cave 40 - 45 20
Geodude Geodude Cave 37 - 45 15
Graveler Graveler Cave 40 - 45 12
Sandslash Sandslash Cave 40 - 45 10
Diglett Diglett Cave 37 - 40 10
Arbok Arbok Cave 39 - 50 10
Dugtrio Dugtrio Cave 40 - 50 5
Hippopotas Hippopotas Cave 40 - 45 5
Sandslash Sandslash Cave 39 - 50 5
Durant Durant Cave 45 - 55 4
Hippowdon Hippowdon Cave 40 - 50 2
Durant Durant Cave 48 - 60 2