It is strange in the animal world that such animals, whose strength and physical build are not comparable to large predators, to be courageous in the face of predatory tigers, the lions were also not spared from the attacks of the dogs.
It interesting that even though the lion and tiger knows they can kick the dog ass, the lion and tiger are being gentle and kind to the dog, that is interesting!
Another problem is that the cats fight and slap with their paws. Even if dogs were somehow bigger and stronger, a lion or tiger could slap tf out of a dog before it got within biting range.
That moment when you say dogs can sometimes attack tigers and force them to retreat meanwhile the video you said that over is of a tiger breaking a pitbulls neck with a single bite. Now go on and explain to me how any dog is going to handle that.