If the two sides fight for their lives, most likely the dog wins (with the exception of small dogs like Chihuahuas), after all, the dog's muzzle is relatively large, easy to cause injury;

If just a general conflict, the cat seems to have a slight advantage, because most cats are more nervous, easily agitated, and will not easily back down, while most of today's pet dogs are intentionally cultivated to be non-aggressive, more big-headed, and often will not be taken seriously by the tiny provocations seriously;

The fact that the puppy saw the cat and did not react, while the cat saw the dog and let out a barking demonstration, shows that the dog saw the cat is not afraid, while the cat is very nervous, just based on this point of view, the dog in the momentum has won.