Yes, you can obtain a Seviper. You have to go to the Swampy Area of the Safari Zone. Then, you have to place certain types of items in that area. Eventually, you could find a Seviper, but they're rare.
You can find a Jigglypuff in the Johto Safari Zone in Pokémon HeartGold and SoulSilver in the Meadow and Swamp areas of the Safari Zone.
In the Safari zone, they are pretty rare. They can be found, but they tend to flee after a few rounds. Once you find one, make sure you catch it.
No. But Sedot can be found in Emerald or Ruby versions.
dratini is in the swamp safari zone ( so iv've heard)
Here's a lot of info on the safari zone in heartgold, including a list of Pokemon and where they are.
You can catch Seviper in the Marshland area of the Johto Safari Zone.
if you mean seviper then you can get it in the safari zone. to learn how try looking at the pokemon marriland johto safari zone guide.
You can find a Jigglypuff in the Johto Safari Zone in Pokémon HeartGold and SoulSilver in the Meadow and Swamp areas of the Safari Zone.
it isn't you have to get hoppip first
There isn't one in johto. its in the kanto region where the safari zone use to be.
No
In the special johto area to the right.
use the binoculars to find out the area its in and run around in there for a minute
in the secret johto area.
No you can only get him in Johto at the safari zone.
the safari zone is located in johto after passing cianwood city and all of the caves.
In Pokemon HeartGold and SoulSilver, the safari zone is in Johto, past Cianwood City, past Routes 46 and 47.