My plan for any dog attack (and a similar technique has worked when I was a child) without a weapon, if it comes down to them or me-
Offer the left forearm, top surface to the back of the mouth and keep pressure, then with the right hand, try to pick up, preferably by the genitals or rear leg, and then slam down on any available protruding surface, either on the head or spine if possible.
With a same size cat, you couldn't get that close.