In the late 1930s, the animation studio at Metro-Goldwyn-Mayer (MGM) was struggling. While Disney had Mickey Mouse and Warner Bros. had Bugs Bunny, MGM lacked a star cartoon character. The pressure was on to create a hit.

Two young animators, William Hanna and Joseph Barbera, were paired up. Hanna was a skilled story editor and director, while Barbera was a brilliant animator and gag writer. They were a perfect match, but their first projects together didn't make much of a splash. Needing a fresh idea, they brainstormed.

They landed on a concept that was simple, familiar, yet full of potential: a conflict between a cat and a mouse. It wasn't a new idea, but Hanna and Barbera believed they could elevate the classic chase formula to new heights of comedic perfection.

The duo got to work on their first cat-and-mouse short. Initially, the characters weren't the ones we know today. The cat was named Jasper, a lanky and somewhat menacing feline. The mouse, a small, brown creature, was technically unnamed in the film, though he was called Jinx in pre-production materials.

The resulting film, released in 1940, was titled 'Puss Gets the Boot'. The plot is straightforward: Jasper the cat delights in tormenting the little mouse. But when Jasper accidentally breaks a vase, his owner, Mammy Two Shoes, warns him that if he breaks one more thing, he's thrown out of the house. The clever mouse immediately realizes his advantage. He spends the rest of the cartoon threatening to knock over glasses, plates, and anything else fragile, effectively turning Jasper's home into a minefield.

Despite the clever gags and fluid animation, the head of the animation studio, Fred Quimby, was not impressed. He saw it as just another cat-and-mouse cartoon and had no plans to produce more. For a moment, it seemed like the duo's creation was a one-off experiment.

But theater owners and audiences felt differently. 'Puss Gets the Boot' was a huge success, and its popularity took the studio by surprise. When the short was nominated for an Academy Award for Best Animated Short Film, MGM executives changed their tune. They wanted more.

With a series now officially in the works, the characters needed permanent names. The studio held an internal contest, inviting employees to submit suggestions. Animator John Carr proposed the names 'Tom and Jerry'. The name was a nod to a popular 19th-century Christmas drink, which in turn was named after characters in an 1821 book, Life in London.

Carr won $50 for his suggestion, and the iconic duo was officially born.

The timing of their creation was also significant. In the early 1940s, as the world plunged into World War II, audiences sought distraction and laughter. The fast-paced, slapstick violence of Tom and Jerry offered pure escapism. It was a world where a cat could be flattened by a steamroller and pop back into shape moments later. This comedic resilience provided a welcome break from the harsh realities of the era, cementing the cartoon's place in the hearts of viewers.