32: Nidoran♂ 34: Nidoking

Nidorino

33: Nidorino

Kanto

	HeartGold	SoulSilver	FireRed	LeafGreen	Crystal	Gold	Silver	Yellow	Red	Blue
Walking in tall grass or a cave
Route 13	+20% L23 +10% L23	+20% L23 +10% L23			60% L23	+30% L23 +30% L23 +30% L23	+30% L23 +30% L23 +30% L23
Route 14	20% L23 +10% L23	20% L23 +10% L23			+30% L26 +30% L26	+30% L23 +30% L23 +30% L23	+30% L23 +30% L23 +30% L23
Route 15	20% L23 +10% L23	20% L23 +10% L23			+30% L23 +30% L23	+30% L23 +30% L23 +30% L23	+30% L23 +30% L23 +30% L23
Route 23								30% L41–44
Route 9								5% L18
Safari Zone Area 1, east			10% L33						10% L33
Safari Zone Area 2, north			10% L30	5% L30					10% L30	5% L30
Safari Zone Area 3, west			10% L30					10% L32	10% L33
Safari Zone middle			10% L31	5% L31				10% L23	10% L31	5% L31

Sinnoh

	Platinum	Diamond	Pearl
Walking in tall grass or a cave
Route 221	+11% L31	+2% L30	+20% L29
Valor Lakefront	+11% L27–28	+2% L22	+20% L21–22

Kalos

	X	Y
Walking in tall grass or a cave
Route 11	10% L21	10% L21