Whatever happened to these forums?
There is no guarantee that you will get an amazing and perfect answer that you agree with, when any forum is open to all people, all over the world, with different opinions and backgrounds. Two answers in six hours is not much, but hang in there and wait for more people to respond. This is not a professional interpretation service, but a conversational area that many people consider valuable.
Jonathan referred to an online Christian dream dictionary, trying to help.
C8 said:
a dog with no teeth would definately struggle to eat and get sustenance, no wonder you were able to prise it's jaws open and there was no pain. Weak dog I'd say, toothless and therefore not much use either.
a dog bit me and I had the strength to immediately open its jaws and thus detach myself from it. I knew it had bitten me but there was no pain. When I parted its jaws, I noticed it had no teeth!
I think of dogs as man's best friend -- intelligent, loyal, alert, protective, compassionate, always striving to bond, even to the point of being annoying.
When it's not your dog it might still be friendly with you, but will also be protective of its owner. The dog in your dream seemed to be owned by someone else, or an independent (wild) dog.
Most strange dogs are manageable, so most of us don't walk around in fear of dogs. But we keep a healthy caution with strange dogs. In your dream, you got the worst of it -- it did bite. But you weren't harmed, and you stayed in that "healthy caution" mode. In fact, you seemed to have more control over it when it was close to you.
Keep your friends close, and your enemies closer.