Ren & Stimpy
Things weren’t always “Happy Happy Joy Joy” when it came to Ren & Stimpy. Actually, if you remember the episode that song came from, you’ll probably recall Ren, a bald Chihuahua who could never take a chill pill, bashing his head with a hammer, and then immediately attacking Stimpy, the fat cat that 99 percent of the time was the reason why Ren could never take a chill pill. Before CatDog came into the picture, Ren & Stimpy was Nickelodeon’s OG canine/feline duo, and always had jaw-dropping moments that would never fly in animated cartoons today. In a nutshell, this show was the early predecessor of Adult Swim.