Hector the Bulldog was introduced in 1945's "Peck Up Your Troubles" to thwart Sylvester the Cat's pursuit of a woodpecker. He played a minor yet enduring role as Tweety's backup protector in "Sylvester and Tweety" cartoons running from the late 1940s through the early 2000s.
Spike the Bulldog/Alfie, a dapper tough who sports a red sweater and a brown derby, appeared with his companion Chester the Terrier in two Warner Bros. shorts as adversaries for Sylvester the Cat. In "Tree for Two" (1952), Spike and Chester are American. In "Dr. Jerkyl's Hide" (1954), Spike has been renamed Alfie and both dogs have a British accent.
Spike and Tyke were a father and son team in "Tom and Jerry" shorts from 1942 to 1957. Spike was introduced in 1942's "Dog Trouble." He was anti-cat, pro-mouse, and a doting father to his son Tyke, who first appeared in 1949's "Love that Pup." The pair had a limited run of their own cartoons in 1957 -- "Give and Tyke" and "Scat Cats."
Spike was Droopy's conniving but ever-foiled rival from 1949 to 1958 in the "Droopy" series. In the mid-1950s, Spike's name was changed to Butch to avoid confusion with the Spike of the "Tom and Jerry" series. Spike/Butch appeared in many of the 1950s cartoons, including 1950's "The Chump Champ," in which Spike's "Gorgeous Gorillawitz" competed against Droopy's "Droopy Poodle" in the "All Ham-erican Sports Carnival."
Beginning with 1952's "Pussyfoot," Marc Antony was the brawny bulldog with a tender heart, the devoted rescuer and protector of the precious kitten Pussyfoot. Marc Antony became a constant worrier because Pussyfoot, unaware, tended to be drawn to hazards. The pair continued together through a series of shorts, ending with 1958's "Cat Feud."
In "Lady and the Tramp" (1945), Tramp's bulldog friend Bull was a jovial stray with an English accent befitting an English bulldog. Bull was the dogcatcher's easy prey -- after being released from the dogcatcher's wagon by Tramp, he's later discovered in the pound when Lady arrives.
In 1950's "Dog Gone South," hobo Charlie Dog tries to oust bulldog Belvedere from Colonel Shuffle's good graces. Belvedere is initially rather dense but prevails by deception. This cartoon includes the Colonel's memorable command, "Oh Belvedere, come here, boy!"
Bulldogs also appeared in such cartoon shorts as "The Bulldog and the Baby" (1942), "What Price Fleadom" (1948), "Bad Luck Blackie" (1949), "King Size Canary" (1949), with Porky Pig in "Trap Happy Porky" (1945), with Chilly Willy in "The Legend of Rockabye Point" (1955), with Mighty Mouse in "The Catnip Gang" (1949), with Casper, the Friendly Ghost in "Puss 'n Boos" (1954), and on "Bozo, the World's Most Famous Clown" show in "Bulldog Bully" (1959). Several unnamed bulldogs were irritated and tricked by the magpies in "Heckle and Jeckle" shorts from 1948 to 1951, including "Goony Golfers" (1948) and "Hula Hula Land" (1949). For a pack of bulldogs, see the Sylvester and Tweety short, "Dog Pounded" (1954).
These are only a few of the many cartoons in which bulldogs appeared from 1940 to 1959.