Road 31

#10Caterpie

Bug

16 encounters Levels 4–5

Versions

GoldCrystalHeartGold

Methods

Walking in tall grass or a cave

Caterpie

#11Metapod

Bug

14 encounters Levels 5–6

Versions

GoldHeartGold

Methods

Walking in tall grass or a cave

Metapod

#13Weedle

Bug Poison

11 encounters Levels 4–5

Versions

SilverCrystalSoulSilver

Methods

Walking in tall grass or a cave

Weedle

#14Kakuna

Bug Poison

10 encounters Levels 5–6

Versions

SilverSoulSilver

Methods

Walking in tall grass or a cave

Kakuna

#16Pidgey

Normal Flying

19 encounters Levels 3–5

Versions

GoldSilverCrystalHeartGoldSoulSilver

Methods

Walking in tall grass or a cave

Pidgey

#19Rattata

Normal

12 encounters Levels 4–5

Versions

GoldSilverHeartGoldSoulSilver

Methods

Walking in tall grass or a cave

Rattata

#21Spearow

Normal Flying

14 encounters Level 10

Versions

GoldSilver

Methods

Headbutting a low encounter rate treeHeadbutting a normal encounter rate treeHeadbutting a high encounter rate tree

Spearow

#41Zubat

Poison Flying

1 encounter Level 4

Versions

Crystal

Methods

Walking in tall grass or a cave

Zubat

#60Poliwag

Water

50 encounters Levels 4–40

Versions

GoldSilverCrystalHeartGoldSoulSilver

Methods

Walking in tall grass or a caveFishing with an Old RodFishing with a Good RodFishing with a Super RodSurfing

Poliwag

#61Poliwhirl

Water

9 encounters Levels 15–32

Versions

GoldSilverCrystalHeartGoldSoulSilver

Methods

Surfing

Poliwhirl

#69Bellsprout

Grass Poison

11 encounters Levels 3–5

Versions

GoldSilverCrystalHeartGoldSoulSilver

Methods

Walking in tall grass or a cave

Bellsprout

#92Gastly

Ghost Poison

2 encounters Level 5

Versions

Crystal

Methods

Walking in tall grass or a cave

Gastly

#102Exeggcute

Grass Psychic

21 encounters Levels 3–10

Versions

CrystalHeartGoldSoulSilver

Methods

Headbutting treesHeadbutting a low encounter rate treeHeadbutting a normal encounter rate treeHeadbutting a high encounter rate tree

Exeggcute

#129Magikarp

Water

24 encounters Levels 10–40

Versions

GoldSilverCrystalHeartGoldSoulSilver

Methods

Fishing with an Old RodFishing with a Good RodFishing with a Super Rod

Magikarp

#163Hoothoot

Normal Flying

25 encounters Levels 3–10

Versions

GoldSilverCrystalHeartGoldSoulSilver

Methods

Walking in tall grass or a caveHeadbutting treesHeadbutting a low encounter rate treeHeadbutting a normal encounter rate treeHeadbutting a high encounter rate tree

Hoothoot

#165Ledyba

Bug Flying

8 encounters Levels 4–10

Versions

SilverCrystalSoulSilver

Methods

Walking in tall grass or a caveHeadbutting treesHeadbutting a low encounter rate treeHeadbutting a normal encounter rate tree

Ledyba

#167Spinarak

Bug Poison

8 encounters Levels 3–10

Versions

GoldCrystalHeartGold

Methods

Walking in tall grass or a caveHeadbutting treesHeadbutting a low encounter rate treeHeadbutting a normal encounter rate tree

Spinarak

#187Hoppip

Grass Flying

4 encounters Level 5

Versions

Crystal

Methods

Walking in tall grass or a cave

Hoppip

#190Aipom

Normal

18 encounters Level 10

Versions

GoldSilver

Methods

Headbutting a low encounter rate treeHeadbutting a normal encounter rate treeHeadbutting a high encounter rate tree

Aipom

#204Pineco

Bug

6 encounters Levels 3–10

Versions

CrystalHeartGoldSoulSilver

Methods

Headbutting treesHeadbutting a high encounter rate tree

Pineco

#214Heracross

Bug Fighting

4 encounters Level 10

Versions

GoldSilver

Methods

Headbutting a high encounter rate tree

Heracross

#264Linoone

Normal

4 encounters Level 3

Versions

HeartGoldSoulSilver

Methods

Walking in tall grass or a cave

Linoone

#293Whismur

Normal

4 encounters Levels 3–4

Versions

HeartGoldSoulSilver

Methods

Walking in tall grass or a cave

Whismur

#399Bidoof

Normal

4 encounters Level 3

Versions

HeartGoldSoulSilver

Methods

Walking in tall grass or a cave

Bidoof