The wonderful thing about the talking dog collars in 'UP' is that we were able to hear the thoughts of the dogs without moving their mouths or emoting like a human. The dogs could pant, scratch, and move the way dogs truly do. The animators studied the movements of many dogs, and we had a dog specialist come in and talk to us about dog behavior.
After my wife and I were married, we obtained a rescue dog from a family that didn't want her anymore. She was a beautiful Collie/Shepherd mix named 'Precious.' It then came to pass that our first marital 'debate' was whether we should change the dog's name away from the same name used by the wacky villain in 'Silence of the Lambs.'