When Porky climbs up the stairs to bed, Sylvester is clinging to Porky's back in fright. In the bedroom Porky has removed his clothes but with Sylvester still clinging to his back. How did Porky remove his clothes with Sylvester clinging to him? A: I was on a train once, Bugs and Daffy chasing each other round and round on the windows, defying gravity; suddenly, Daffy stopped and said "y'know, when you're a cartoon, you can do anything." And went back to the chase. It's a cartoon, fella, get it? Not real life. Geez, what a maroon.
Porky says at one point he should have gotten a dog. But in several cartoons in which he co-starred with Charlie Dog, he states he doesn't want a dog. Perhaps this is a response to the events of "Little Orphan Airedale", seemingly showing regret at not adopting Charlie.
The shadows of mice carrying lighted candles is thrown on the wall. The flames themselves also cast shadows. Light thrown against an object result in a shadow. But a flame itself cannot cause a shadow.
The shadows of mice preceding Porky Pig are cast against the wall. But Porky Pig and the cart cast no shadow.
Porky is seen using a sweat rag near the end of the short. However, in real life, pigs do not sweat. I thinks perhaps that someone has forgotten that cartoons are NOT real life.