Continuity mistake: When we see Nasty Canasta in the saloon, you can see that the hat he is wearing has a blue band around it. But when he drinks the drink that the bartender has made for him, the blue band is missing.
Continuity mistake: When we see Nasty Canasta's drink, you can see there are holes on the counter next to the glass when the bartender puts two sugar cubes in it. But when Daffy Duck dares Nasty Canasta to drink it, the holes have disappeared.
Continuity mistake: When the bartender prepares Nasty Canasta's drink, he opens a cabinet and you can see the three bottles have wording on their labels. But when the bartender pours the contents of the bottles into the glass, there is no wording on the labels.
Continuity mistake: When Daffy Duck opens his waistcoat to reveal his collection of badges, you can see his sheriff badge has the word "Sheriff" on it, but when he puts the badge on his coat, the wording has disappeared.
Continuity mistake: When we see Porky as the sheriff for the first time, he has his badge on the right side of his body, but when he says "Lucky for him it is a one-horse town", the badge is now on the left hand side.
Continuity mistake: When Nasty Canasta is drinking at the saloon, you can see that he has a hairy torso, but when he sees Porky's toy soldier during his showdown with Daffy at the end of the cartoon, his chest appears clean-shaven.