109: Koffing 111: Rhyhorn

Weezing

110: Weezing

Kanto

	FireRed	LeafGreen	Yellow	Red	Blue
Walking in tall grass or a cave
Pokémon Mansion 1F	5% L32			4% L37	1% L39
Pokémon Mansion 2F	5% L32			4% L39	1% L37
Pokémon Mansion 3F	5% L32			15% L38–40	1% L42
Pokémon Mansion B1F	5% L34			14% L40–42	1% L42

Johto

	Crystal	Gold	Silver
Walking in tall grass or a cave
Burned Tower B1F	1% L16

Sinnoh

	Platinum	Diamond	Pearl
Walking in tall grass or a cave
Route 227	+10% L52	+10% L55	+10% L55
Stark Mountain	+10% L52	+10% L55	+10% L55
Stark Mountain entrance	15% L51–53	10% L56	10% L56
Stark Mountain inside	15% L52–54	10% L58	10% L58

Unova

	Black 2	White 2	Black	White
Walking in tall grass or a cave
P2 Laboratory	15% L57–58	15% L57–58