Dutch Roll is a coupling of lateral with directional stability driven by sideslip. Pretty much any aeroplane will do it, most can be induced to do it deliberately by a sinusoidal yaw input called a "rudder doublet" and many will do it in turbulence. Many birds deliberately induce then damp it as a means of making rapid heading changes, although we don't use it deliberately in aeroplanes.
A yaw damper is the most common fix in more complex aeroplanes to eliminate unwanted DR. It's not the fix you'd normally use in a small aeroplane, where you'd more likely change the shape or size of the fin.
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