The sobriquet of police detective Bill “Bulldog” Brennan (Alan Hewitt), a human bloodhound who sniffed out suspicious goings-on at the house of newspaper reporter Tim O’Hara (Bill Bixby) who was hiding a Martian (Ray Walston) on the sitcom MY FAVORITE MARTIAN/CBS/1963-66.
Note: Bulldog was also the nickname of a rough and tumble construction worker played by Noble Willingham in the sitcom WHEN THE WHISTLE BLOWS/ABC/1980
And radio talk show personality Bulldog Briscoe (Dan Butler) was a skirt-chasing (he loved women who didn’t wear underwear) host of a Seattle sports call-in show on the sitcom FRASIER/NBC/1993-2004.
Hugh “Bulldog” Drummond is a British fictional character created by H. C. McNeile and published under his pen name “Sapper.” The stories follow the exploits of a World War I veteran Captain Hugh “Bulldog” Drummond, formerly of the Royal Loamshire Regiment, who is fed up with his sedate lifestyle and becomes a gentleman adventurer. His character has appeared in novels, short stories, on the stage, in films, on radio and television, and in graphic novels.