You can get Pidgey by migrating from FireRed/LeafGreen or by trading with Platinum.
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.
You can migrate one from Firered or Leafgreen.
you cant find a pidgey in Pokemon emerald the only way to get a pidgey is to trade with Fire Red or Leaf Green
You can find Pidgey in 'Swarms' in certain routes on certain days after you obtain the National Dex.
transfer from 1st gen games
Personally, I think Pidgey's are way better. They are easier to find, have better moves and more evolutions.
Pidgey evolves at level 18 into pidgeotto. pidgeotto evolves at level 36 into pidgeot.
Trade from white, can be found in white forest
you do not find dialga in Pokemon pearl
Sorry, but i am afraid you can not find pidgey on emerald. Only on red, yellow, green, blue, diamond, pearl, fire red and leaf green. Sorry again!
u cannot find pidgey in Pokemon sapphire emerald and ruby, u can get it at leaf green and all
Trade with Pokemon Pearl or Pokemon Platinum
Pidgey evolves at level 18.