you can get diffrent Pokemon eggs with the diffrent Pokemon u use
You find Gligar in Pokemon Platinum at Route 206. You can't FIND IT IN PEARL.
there is no such thing as a hippopotamus in pearl I think the question was supposed to be: "How do you get Hippopotas in Pokemon Pearl?" The answer is: You find it in Maniac Tunnel.
You can get a Houndour in Pokemon Pearl by breeding it from a Houndoom, which you can find on route 214 and 215.
Yes, and No. You Can find the Pokemon Chansey, But there are no Pokemon by the name of Chansy capturable on Pokemon Diamond, Pearl, or Platinum versions.
You can not find them you can only train them to 50.
eggs
This is Pokemon. Not runescape. You can't get Easter eggs in Pokemon ;)
Players can only get the lucky egg in Pokemon Pearl from the wild Chanseys. Lucky eggs are very difficult to find in the game.
talk to lots of people and they give you eggs
No.
you do not find dialga in Pokemon pearl
no you can not have legendary Pokemon eggs unless you went to a Nintendo event
You can get one in hearthome city.
the Pokemon have to be opposite genders and have the same type
Trade with Pokemon Pearl or Pokemon Platinum
no you don't trade eggs. you get a riolu from Riley after helping him on iron island
the best Pokemon you can catch in Pokemon pearl is heatran