I'm not entirely sure what it specifically means. 'Filthy' is a very unkind description for dogs which are generally clean animals. And 'pulp fiction' is a type of writing, so it's really hard to make sense of it as it is. It might be a very personal or creative, yet inappropriate view of dogs.
Well, it might be that this person has a very warped view of the world. They could be lumping dogs together with something they consider 'filthy' in the context of a type of writing like 'pulp fiction' perhaps because they see dogs as common or unrefined in some strange way. But it's really not a fair or accurate view of dogs at all.
Maybe it's about the idea that dogs, like the characters in pulp fiction, can be full of surprises. Their personalities can be unpredictable and exciting, just like the twists and turns in a pulp fiction story.
Yes, there might be some passing references. It could be part of the dialogue or a character's view that gives the impression of pigs being filthy. But it's not a major theme in the movie.
In Pulp Fiction, pigs are not really the focus in terms of being filthy. However, in general, pigs might be wrongly considered filthy because they roll in mud. But this is actually a natural behavior for them to cool down and protect their skin from the sun and parasites. In the context of the movie, it could be just a passing comment or an expression of someone's view that doesn't necessarily have a deep - seated meaning related to the overall plot.
Well, in 'Pulp Fiction', it might be that the idea of a pig being a filthy animal is part of the overall gritty and somewhat unseemly world that the movie portrays. Pigs are often associated with messiness and gluttony in general cultural perception. The movie might be using this common perception to enhance the atmosphere of the story, to show the base or unrefined aspects of the characters or the situations they are in.