Can Dog Saliva Kill Bacteria?

Dog saliva is known to kill bacteria through the antiseptic properties. I
wouldn't suggest getting a dog to lick a wound though, there are many
other bacteria and bugs on that tongue. Think about where it has been!
They lick themselves, their own wounds because their body is immune to
certain bacteria that we are not. It is fine on a little cut or scratch,
but be sure to wash it thoroughly after if you do decide to let a dog
lick a wound. : )

Yes it can, Dog saliva contains an enzyme which curtails bacteria. It's almost natural for a dog to lick it's master wounds.

Yes, a dogs mouth is cleaner than a humans mouth, believe it or not. For example, back in the Civil War many soldiers made sure their dogs would not be harmed, not exactly out of love an' respect but because when they were shot or had an open wound, they would let the dog lick them so it would not get infected

"yes" , dog saliva can kill bacteria because dogs  have very clean mouths.