Here is a posed publicity still from the original 1933 “King Kong”.  King Kong and the Tyrannosaur are posed stop-motion puppets, perhaps 18″ tall.  Foreground and background elements are painted.  There is no scene exactly like this in the actual film, Kong never picks up a log, jamming it into the Tyrannosaur’s mouth, although maybe it would’ve been a good idea.  For you collectors, click on the picture and you will get the full size version which you can copy.