Unknown; all Rattata
Pokemon HeartGold and SoulSilver
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
 Bidoof | 20 | Walking in tall grass or a cave | 40% |
 Goldeen | 10-20 | Fishing with an Old Rod | 100% |
| Goldeen | 10-20 | Fishing with a Good Rod | 100% |
| Goldeen | 10-20 | Fishing with a Super Rod | 100% |
 Magikarp | 10-20 | Surfing | 100% |
 Rattata | 20 | Walking in tall grass or a cave | 100% |
 Zigzagoon | 20 | Walking in tall grass or a cave | 40% |