Route 2

	FireRed	LeafGreen
Walking in tall grass or a cave
Caterpie	5% L4–5	5% L4–5
Pidgey	45% L2–5	45% L2–5
Rattata	45% L2–5	45% L2–5
Weedle	5% L4–5	5% L4–5

north, towards Pewter City

	HeartGold	SoulSilver
Walking in tall grass or a cave
Ariados	+5% L7
Beedrill		+10% L7 +4% L10
Butterfree	+10% L7–8 +10% L7–8
Caterpie	+21% L3–4 +21% L3–4 +10% L3 +10% L3
Hoothoot	+20% L3 +30% L3–5	+40% L3 +10% L5 +10% L3
Kakuna		+1% L7 +20% L5 +20% L5 +10% L3
Ledian		+9% L7–10
Ledyba		+20% L3 +4% L10 +10% L3
Metapod	+20% L5
Minun	+20% L5	+20% L5
Noctowl	+14% L7–10	+14% L7
Pidgeotto	+5% L7 +9% L7–10	+5% L7
Pidgey	+20% L3 +20% L3 +10% L3 +30% L3–5	+20% L3 +30% L3–7 +10% L3
Plusle	+20% L3	+20% L3
Shinx	+40% L3–5	+40% L3–5
Spinarak	+4% L10 +21% L3–4 +10% L3
Weedle		1% L4 +20% L3 +10% L3 +10% L3 +10% L5

	HeartGold	SoulSilver	Yellow	Red	Blue
Walking in tall grass or a cave
Ariados	+5% L7
Beedrill		+10% L7 +4% L10
Butterfree	+10% L7–8
Caterpie	+21% L3–4 +21% L3–4 +10% L3 +10% L3				15% L3–5
Hoothoot	+20% L3 +30% L3–5	+40% L3 +20% L3–5
Kakuna		+1% L7 +20% L5 +20% L5 +10% L3
Ledian		+9% L7–10
Ledyba		+20% L3 +4% L10 +10% L3
Metapod	+20% L5 +20% L5
Minun	+20% L5	+20% L5
Nidoran♀			15% L4–6
Nidoran♂			15% L4–6
Noctowl	+14% L7–10	+14% L7
Pidgeotto	+5% L7 +9% L7–10	+5% L7
Pidgey	+20% L3 +30% L3–8 +10% L3 +10% L3	+20% L3 +30% L3–7 +10% L3	35% L3–7	45% L3–5	45% L3–5
Plusle	+20% L3	+20% L3
Rattata			35% L3–4	40% L2–5	40% L2–5
Shinx	+40% L3–5	+40% L3–5
Spinarak	+4% L10 +21% L3–4 +10% L3
Weedle		1% L4 +20% L3 +10% L3 +10% L3 +10% L5		15% L3–5