Thank you for the reply. Made my day. :)
I feared that spawning isn't possible since it's an old game and doesn't even have a console. But I already decided to load the old save because he's too good of a friend to leave die there in vain.
Is there any way to spawn Dogmeat? I told him to wait when I was doing the quest to clear raiders in the farm in The Hub but I forgot about him and left the area. You can't get back to the farm and I realized he was gone after two hours or so and I don't feel like replaying two hours.
Is there a way to make Steam recognize that I'm playing Fallout when I run Fallout Fixt? I tried adding "-steamappid 38400" at the end of the shortcut's path but it doesn't work like it does with 3 and NV. It might be because the executable is in its own folder and not with the original.