You can find kangaskan in the safari zone in Fuscia city in Pokemon leafgreen. Start the safari game and then keep going Right and then go up and you'll see an entrance, go into it. Go right again and go to then very first patches of grass. Keep searching until you find one.
Area 1 of the safari zone.
Its an occasional appearance. For me, just go round to the far areas. Same with Kangaskan.
Go to the upstairs of the Safari Zone and look through the binnoculars. If you see a Kangaskan through then you can run into it at the Safari Zone. The Pokemon that you see through the binnoculars are rare and chage sometimes.
in the safari zone
Piplup does not exist in Pokemon LeafGreen or FireRed.
No, you cannot find cyndaquil in LeafGreen.
you should go to gamestop
In the great marsh.
the Pokemon kangaskan is a normal type
LeafGreen version does not have Growlithe.
In the grass...
You cannot catch houndour in Pokemon leafgreen either get one from Pokemon emerald or Pokemon colosseum.