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.
There are definite connections. Both films showcase Tarantino's nonlinear storytelling and have elements of crime, violence, and dark humor. Also, the characters in both often have complex and morally ambiguous motivations.
Pulp Fiction and Reservoir Dogs aren't related. They are separate movies with their own unique storylines. But both showcase Tarantino's signature style of nonlinear storytelling and sharp dialogue.