28: Sandslash 30: Nidorina

Nidoran♀

29: Nidoran♀

Kanto

	FireRed	LeafGreen	Yellow	Red	Blue
Walking in tall grass or a cave
Route 10			10% L17
Route 2 south, towards Viridian City			15% L4–6
Route 22			30% L2–4	5% L3–4	40% L2–4
Route 3	1% L6	14% L6–7
Route 9			30% L16–18
Safari Zone Area 1, east	5% L24	20% L24	20% L29	5% L24	20% L24
Safari Zone Area 2, north		20% L30	20% L14		20% L22
Safari Zone Area 3, west	5% L30	20% L22	20% L21	5% L25	20% L25
Safari Zone middle		20% L22	20% L36		20% L22

Johto

	HeartGold	SoulSilver	Crystal	Gold	Silver
Walking in tall grass or a cave
National Park			+30% L12 +30% L12
Route 35	+20% L12 +10% L12	+20% L12 +10% L12	+30% L12 +30% L12 +30% L12	+30% L12 +30% L12 +30% L12 +30% L12	+30% L12 +30% L12 +30% L12 +30% L12
Route 36	20% L12 +10% L12	20% L12 +10% L13 +10% L12 +10% L12		+30% L12 +30% L12 +30% L12	+30% L12 +30% L12 +30% L12

Sinnoh

	Platinum	Diamond	Pearl
Walking in tall grass or a cave
Route 201	+11% L2–3	+20% L3	+2% L2