Deoends which game version. Off the top of my head, Ican only remember that you find them in the safari park on ruby and sapphire.
Ryhorn is not in any specific place in the Safari Zone. Just check around and search through the grass, and hope to find a Ryhorn. Ryhorn should be pretty easy to find in the first area you enter, though.
ryhorn evolves at 42. that's all i know
Ryhorn evolves into Rydon at lv. 42. it will also learn Hammer Arm after it evolves.
If I were to have a ryhorn or a rhydon I would teach it rock blast, scary face, take down, and horn drill. I think those moves would be the best ones for ryhorn.
yes----into rhydon
In HeartGold/SoulSilver you can find a Ryhorn on Victory Road or in the Safari Zone. In the Safari Zone, it's in 'savannah' areas.
By getting it to lvl 42
level 42
Rhydon or Ryhorn.
at lvl.41
Mach Bike Section of the Safari Zone
i beleve 42