IIRC King Cobras are snake eaters.
Unlikely to get a puppy.
Did see an episode of Cops the other night, somewhere in the SouthWest.
The cops caught a Burmese or Retic Python. The neighbors said it was the 3rd one caught in the neighborhood !
if it really is a King Cobra then the pit bull puppies and chickens that disappeared have nothing to do with it. A king cobra is exclusively a snake eater and will only strike other animals if it feels threatened.