What is show from which pinky and the brain was spun off?

"Pinky and the Brain" was originally a segment of the animated television series "Animaniacs" which aired from 1993 to 1998. "Animaniacs" was created by Tom Ruegger and produced by Steven Spielberg. It was known for its humor, irreverence and pop culture references. The show featured a variety of characters such as Yakko, Wakko, and Dot who were the titular "Animaniacs," as well as Pinky and The Brain. The two mice, Pinky and The Brain, are laboratory mice who were the subject of scientific experimentation. The Brain, with his towering intellect, seeks to take over the world but is constantly thwarted by Pinky's goofiness and shenanigans. The popularity of the Pinky and the Brain segment led to it being spun off into its own series in 1995.