Side headlock choke destroys any dog.
Take a dogs back + rear naked coke destroys any dog
Mount and ground and pound destroys any dog
Marcelo Garcia guillotine choke destroys any dog
So basically, friends? Brazillian Jiujitsu destroys any dog. Now if dogs knew brazillian jiujitsu

wow, that would be a formidable foe but since they dont their tactics are purely strength based and revolve around tearing. To fight a large dog you may have to give up your forearm, at least. Put the forearm in the dogs mouth and then perform a Marcelo Garcia styled guillotine choke which only requires one hand. Instead of grabbing your hand though you would try to grab your elbow. The choking sensation typically opens a dogs mouth and from there the choke can be completed. The dog cannot last. Sometimes, because dogs are so dumb they'll let you just put them in a front headlock. From this position you can put them to rest and make them sit, lay, and stay like a good dog.