36: Clefable 38: Ninetales

Vulpix

37: Vulpix

Kanto

	HeartGold	SoulSilver	FireRed	LeafGreen	Yellow	Red	Blue
Walking in tall grass or a cave
Pokémon Mansion				15% L30–32
Pokémon Mansion 1F							10% L34
Pokémon Mansion 2F							20% L32
Pokémon Mansion 3F							20% L33
Pokémon Mansion B1F				15% L30–32
Pokémon Mansion B1F							15% L35
Route 7		+5% L15 +20% L18					10% L18–20
Route 7				10% L18–20
Route 8		+10% L18 +10% L18 +5% L17					20% L15–18
Route 8				20% L15–18

Johto

	HeartGold	SoulSilver
Walking in tall grass or a cave
Route 36		10% L13 +5% L15
Route 37		10% L14 +5% L15
Route 48		9% L21–22 +20% L24

Hoenn

	Emerald	Ruby	Sapphire
Walking in tall grass or a cave
Mt. Pyre outside	30% L25–29	20% L25–29	20% L25–29

Sinnoh

	Platinum	Diamond	Pearl
Walking in tall grass or a cave
Route 209	+8% L17–19	+8% L16	+8% L16
Route 214	+8% L24	+8% L24	+8% L24