There were two flattenings of Sheriff (Ping! Ping! Ping!) Ricochet Rabbit.  In "Clunko Bunko" a man disgused as the circus attraction Clunko robs the box office.  When Ricochet mistakes the real Clunko for the thief, Clunko responds by squashing the sheriff flat.  

In "Space Sheriff" Ricochet tries to attack a space monster, only to end up flattened on a rock.  Deputy Droop-a-Long has to peel him off the rock.