..it is the size of the fight in the dog.
This is played for laughs but it brings up a real problem. The closer the dog is to the bear, the more likely the bear will chase the dog back to the owner, when the dog chickens out. It reminds me of when my salmon fishing neighbor was getting water for his camp*. He stepped on the road with his dog, Teddy, and a large black bear was on the road about the distance in the video. The dog rushed it. In a long slow drawl, my friend said, “Well…ll, Teddy, you are on your own.” He hiked for the camp, post haste.
Also, You have to admire a guy with the chutzpah to name his Bichon, Ruger.
*Cabins are called camps here.