Give it a Protector and trade it and it will evolve into Rhyperior.
You can get Rydon to evolve by trading it with a protecter.
No
it evolve at lv42
give it poo
you can evolve rydon by trading with the protctor
Rhyhorn evolves at level 42.
Ryhorn evolves into Rydon at lv. 42. it will also learn Hammer Arm after it evolves.
trade it with a protector then trade it back
trade it into Pokemon emreld
There is one that I know of, the leaf stone.
No, a Moon Stone is for a Clefairy or some sort of type like that. A Rhydon needs a item called Protector, and then you need to trade it to another friend. When it is traded, then it becomes a Rhyperior.
You have to trade it while your Rydon is holding a Protecter item. Trade it to your friend and then trade it back to yourself and you now have a Ryperior.