You need to place10 Forest Objects and
14 Peak Objects in the Meadow Zone and wait 70 days.
You can get him at the safari zone.
in the meadow
you can find it in the sarfaria zone
Houndour can be found in Route 7 in SoulSilver and it can also be found in the Safari Zone.
you can find him there and in bellsprout tower
in safari zone
You can get him at the safari zone.
in the wild
in the meadow
saffari zone
In the Safari Zone(Encounter Rate is rare)
safari zone, mountain zone. Rarely appears.
At Safrai Zone
you can find it in the sarfaria zone
You can find it in the Safari Zone or trade it from Platinum, Diamond, or Pearl.
The grass under safarri zone
Dusclops can be found in the Safari Zone in Pokemon Soulsilver. The rarity varies.