William Hanna in the context of "Rudolf Ising"

Tom and Jerry (also known as Tom & Jerry) is an American animated media franchise and series of comedy short films created in 1940 by William Hanna and Joseph Barbera. Best known for its 161 theatrical short films produced by Metro-Goldwyn-Mayer, the series centers on the rivalry between a cat named Tom and a mouse named Jerry. Many shorts also feature several recurring characters.

Created in 1940 as the MGM cartoon studio struggled to compete with Walt Disney Productions and Leon Schlesinger Productions, Tom and Jerry's initial short-film titled Puss Gets the Boot proved successful in theaters and garnered an Academy Award nomination for Best Short Subject (Cartoon). Hanna and Barbera later directed a total of 114 Tom and Jerry shorts for its initial MGM run from 1940 to 1958. During this time, they won seven Academy Awards for Best Animated Short Film, tying for first place with Walt Disney's Silly Symphonies with the most awards in the category. After the MGM cartoon studio closed in 1957, MGM revived the series with Gene Deitch directing an additional thirteen Tom and Jerry shorts for Rembrandt Films in Czechoslovakia, from 1961 to 1962. Tom and Jerry became the highest-grossing animated short-film series of that time, overtaking Looney Tunes. Chuck Jones produced another 34 shorts with Sib Tower 12 Productions between 1963 and 1967. Five more shorts have been produced since 2001, making a total of 166 shorts.

Joseph Roland Barbera (/bɑːrˈbɛərə/ bar-BAIR-ə; Italian: [barˈbɛːra]; March 24, 1911 – December 18, 2006) was an American animator and cartoonist. He co-founded the animation studio Hanna-Barbera alongside William Hanna.

Born to Italian immigrants in New York City, Barbera hesitantly joined Van Beuren Studios in 1932 and subsequently Terrytoons in 1936. In 1937, he moved to California, and while working at Metro-Goldwyn-Mayer (MGM), Barbera met Hanna. The two men began a collaboration that was at first best known for producing Tom and Jerry.

Thomas Jasper Cat Sr., known simply as Tom, is an American cartoon character and one of the two titular main protagonists (the other being Jerry Mouse) in Metro-Goldwyn-Mayer's series of Tom and Jerry theatrical animated short films. Created by William Hanna and Joseph Barbera, he is a grey-blue and white anthropomorphic (but usually silent) domestic short haired tuxedo British cat who first appeared in the 1940 MGM animated short Puss Gets the Boot. The cat was initially known as "Jasper" during his debut in the short; however, beginning with his next appearance in The Midnight Snack he was known as "Tom" or "Thomas".

Gerald Jinx Mouse, known simply as Jerry, is an American character and one of the two titular characters in Metro-Goldwyn-Mayer's series of Tom and Jerry theatrical animated short films and other animated media, usually acting as the protagonist opposite his rival Tom Cat. Created by William Hanna and Joseph Barbera, Jerry is an anthropomorphic (but usually silent) brown house mouse, who first appeared in the 1940 MGM animated short Puss Gets the Boot.

The character was not referred to by name in his debut cartoon; Hanna said that the mouse's original name as "Jinx", while Barbera claimed the mouse went unnamed in his first appearance. A 1940 article from MGM's Short Story magazine, however, would refer to the character as "Pee-Wee".

The Metro-Goldwyn-Mayer cartoon studio (also commonly referred to as MGM Cartoons) was an American animation studio operated by Metro-Goldwyn-Mayer during the Golden Age of American animation. Active from 1937 until 1957, the studio was responsible for producing animated shorts to accompany MGM feature films in Loew's Theaters, which included popular cartoon characters and series such as William Hanna and Joseph Barbera's Tom and Jerry series and Tex Avery's Droopy.

Prior to forming its own cartoon studio, MGM released the work of independent animation producer Ub Iwerks, and later the Happy Harmonies series from Hugh Harman and Rudolf Ising. The MGM cartoon studio was founded to replace Harman and Ising, although both men eventually became employees of the studio. After a slow start, the studio began to take off in 1940 after its short The Milky Way became the first non-Disney cartoon to win the Academy Award for Best Short Subjects: Cartoons. The studio's roster of talent benefited from an exodus of animators from the Warner Bros. and Disney studios, who were facing issues with union workers. Originally established and run by executive Fred Quimby, Hanna and Barbera became the heads of the studio in 1955 following Quimby's retirement. The cartoon studio was closed on May 15, 1957, at which time Hanna and Barbera took much of the staff to form their own company, Hanna-Barbera Productions, then named H-B Enterprises.

Puss Gets the Boot is a 1940 American animated short film and the first short in what would become the Tom and Jerry cartoon series, though neither are yet referred to by these names. It was directed by William Hanna and Joseph Barbera, and produced by Rudolf Ising. It is based on the Aesop's Fable, The Cat and the Mice. As was the practice of MGM shorts at the time, only Rudolf Ising is credited. It was released to theaters on February 10, 1940, by Metro-Goldwyn-Mayer.

In this short, the cat is named Jasper, and appears to be a scruffy, battle-hardened street cat, more malicious than the character that Tom would develop into over time. The unnamed mouse (referred to as Pee-Wee in an official MGM magazine), is similar to who would become the Jerry character, albeit slightly thinner. The basic premise is one that would become familiar to audiences; in The Art of Hanna-Barbera, Ted Sennett sums it up as "cat stalks and chases mouse in a frenzy of mayhem and slapstick violence". Though the studio executives were unimpressed, audiences loved the film and it was nominated for an Academy Award. This short ultimately lost to The Milky Way, another MGM short about three kittens who lost their mittens and were forced to go to bed without their dinner of milk.