My violin has a completely smooth saddle, allowing the tailgut to slide into whatever position is most natural. Due to the nature of the shape of the bridge, the tailpiece is not level; it sags towards the treble side. In a completely ideal situation, would notches be cut so that the tailpiece was level with the top?
And another thing...
How do I get my dog to stop whining and appreciate the beautiful intricacies of practising the violin?
that should be fine, the tailpiece isn't supposed to be level if the e string is lower than the G string
And as for the dog, get him some custom fit musical earplugs.
Could be hurting the dog's ears. Could he be put in another part of the house?
I wouldn't worry about the tail piece being level. I would be concerned, however, if the entire system--neck, bridge, tailpiece--are misaligned. Often they are not aligned, and aren't on my violin.
The dog is trying to join in with you!