In reality, Gillian Anderson was no fan of the little dog that played Queequeg, due to its constant noxious flatulence.
The boat that Mulder and Scully ride on, the 'Patricia Rae', is named after the mother of the writer.
Scully's dog is named Queequeg after the fictional character in the 1851 novel Moby-Dick by American author Herman Melville. The chief harpooner aboard the Pequod, Queequeg is the first principal character encountered by the narrator, Ishmael. This episode displays many elements in common with Moby-Dick, particularly the obsession with a large, evasive aquatic animal.