its not backface culling. Its not, I can tell you that as a fact.
What you do is press the spacebar. Once. And it brings you into a view of 4 panes (front, side, top, perspective).
Now there is nothing special about the 3 orthographic views (front, side, top). You can't dolly the camera but you can pan and zoom. Now go into side or front view (depending on which axis you modeled your dog on. That means nothing special- just whichever side actually is the dog's head's side.)
Ok, you activate that pane by clicking on it.
So click on it and I hope you know how to drag select.
Keep the mouse button pressed and it makes a box and when you let go of the mouse button, it selects everything in that box (nifty, eh?:p)
Now, if you did this in an orthographic view (again, orthographic = front, side, or top) it will select things on both
Then you can move, scale, or rotate that selection, and, since both side vertexes are selected, both sides are affected (ironic, isn't it?
Can't get any more specific then that unless I were to point out to you which button on the mouse to press or where to find the spacebar.
I hope THAT helps,
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