Continuity mistake: When Porky arrives home, you can see a window looking outside to the right of the front door, but when Porky shoots the man upstairs a second time, the front door now leads to a hallway with a staircase.
Porky's Duck Hunt (1937)
1 mistake
Trivia: The first Warner Brothers cartoon to feature Daffy Duck, and the first in which Mel Blanc voices Porky Pig.