On both CBS and the syndicated Merrie Melodies Show, the scene near the end, with Nasty Canasta trying to repeat Bugs' success of winning a jackpot from a gun that the former had pulled on the latter, only to be bombarded by actual gunfire, was removed. However, whereas CBS would simply cut the scene altogether (cutting from Canasta watching Bugs win the fortune to Bugs' saying the short's closing line of not stealing 18 karats from rabbits), Merrie Melodies would simply delete the visuals of the gunshot by replacing it with a freeze-frame shot of Bugs.
On Cartoon Network, as on CBS and the Merrie Melodies show, the ending gun game was removed. However, whereas CBS and the Merrie Melodies show would only remove Nasty Canasta's (unsuccessful) outcome with the gun, Cartoon Network would remove the entire gun game segment altogether (both Bugs' outcome AND Nasty Canasta's outcome). The part where Nasty Canasta tries to repeat Bugs' success was removed and replaced with a repeat shot of Nasty Canasta's sad reaction to Bugs winning.
Source: The Censored Cartoons Page