In the dog ending of "Silent Hill 2: Remastered (SILENT HILL 2)", players need to find two broken key parts. The first key part is in the east of South Valley, next to Dajie's Cafe on Neely Street. It's a pet center. You can find it in the back room after entering.
Where to get the broken key parts of Silent Hill 2
1. Part 1 of the broken key: in the east of the South Valley. Next to the Dajie Cafe on Neely Street is the Pet Center. Go in and find this in the back room
2. Part 2 of the broken key: in the west of the South Valley. Just after the Baldwin Building, you'll reach Katz Street. Next to the first house on the north side is a door with a bone on it. Go through the door and find the second broken key part in the doghouse