I used to be a co-owner of a large Rhodesian Ridgeback... 110# of muscular, pack-oriented, wrestling-loving, wonder-mutt. I used a lot of kokyu-nage and blending (and pleanty of leg sweeps), but an atemi (knee) to the solar plexus followed up by a successful pin was required to dissuade him when he was "going for my throat." Never
let a ridgeback win - unless you like to be the lesser member of the "pack."
Also, upending the mutt and balancing his mass over his mouth, which he had fastened onto my forearm, was an effective way of saying, "please let go..."