In the 1953 Italian movie, "Umberto D", The main characters' dogs' name is "Flike". He is a Jack Russell Terrier.
The movie is very famous, if you are into post-WWII, Italian, neorealism films, produced between 1943 and 1956.
I have yet to find the meaning of the name, as it pertains, specifically, to Italian culture.
Strangely, it seems to fit this particular breed, size and sex.