An old animated film with dogs that used doors that were like portals??
I have been searching for this movie for some time now. I remember watching it when I was between 7-12 years old... I'm 24 now, no I'm not going through a mid-life crisis.
-This movie or possibly a cartoon series was made sometime in the 80's or very early 90's.
Story: From what I remember, the plot of this cartoon involved several dogs, at least 3 or 4. One of the dogs could smell a hidden door, it may have been the same dog, but one of the dogs also had a bunch of keys. That dog would then insert the key into the keyhole(which wouldn't appear until after the key was in) and then the entire door would appear.
The doors were some kind of portals to other places. I don't think it took them to a different time, just a different place.
Besides that, I can remember one of the dogs(possibly the leader/head dog) getting adopted by some young boy.
Also, it may have been the beginning, but I'm not sure. I believe that the movie started with the dog that can find/smell the doors/portals and the leader dog standing on the ledge of some mountain really high up. The "smeller" dog smelled a door that was "so many" feet away from the ledge. The leader dog had to trust the smeller dog and the dog that had the key jumped off the ledge and got the key into the keyhole, unlocking the door and the dogs made it off the ledge safely. They may have been running from someone/something/or the evil villain in the movie, that I'm not sure of.
I would appreciate any information about this cartoon movie. I believe it is a movie, but it was so long ago that I don't remember if it was a movie or cartoon series. A title would be ideal, but any info anyone can give me would be greatly appreciated.
Thanks