Thread:Railwayseries2/@comment-27996717-20181015115045/@comment-9743299-20181016123827

Anyway, here's a list of Simpsons episodes that used the cat yowl.
 * "Treehouse of Horror I" (Debut episode; heard once.)
 * "Brush with Greatness" (2nd and 3rd yowls heard once as Snowball runs out of the living room while Homer is dropping weights.)
 * "Lisa's Date with Density" (1st and 2nd yowls heard once as Lisa is trying to push Snowball into a pram.)
 * "Bart Sells His Soul" (5th yowl heard after Snowball hisses at Bart as he has no soul.)
 * "Homer Alone" (3rd yowl heard as Snowball yowls inside a cage.)
 * "Homer Badman" (5th yowl heard when a cat is about to get ran over by a car in a movie on TV.)
 * "Old Yeller-Belly" (1st yowl heard once when Snowball scratches Homer while saving him from a treehouse fire.)
 * "Girly Edition" (3rd yowl heard twice in a high pitch and first yowl heard in a normal pitch as The Crazy Cat Lady scares off Lisa from her house and beside the railroad tracks.)
 * "Please Homer, Don't Hammer 'Em" (1st yowl heard in a normal pitch and third yowl heard in a high pitch when Bart is putting cats and firecrackers down Principal Skinner's pants.)
 * "The Seven-Beer Snitch" (3rd yowl heard after Snowball hisses and swipes at Lisa.)
 * "Treehouse of Horror VI" (1st yowl heard once in "Homer3" when Snowball and Santa's Little Helper growl at Homer under the rug when Homer is trying to find a place to hide from Patty and Selma.)
 * "Wild Barts Can't Be Broken" (3rd yowl heard once when a cat gets inside a TV set before Jasper Beardly changes channels and says "200 channels and nothing but cats." and 6th yowl heard once as Snowball jumps out of a bag that Moe Szyslak was holding during a song sequence.)
 * "Midnight Towboy" (1st yowl heard twice in a normal and low pitch as The Crazy Cat Lady is crossing the road while whipping her cats.)
 * "Thursdays with Abie" (1st, 2nd, 3rd and 6th yowls heard once as a gang of cats gain up on Bart in a sewer.)
 * "Moonshine River" (3rd and 1st yowls heard once when a cat flies onto a Springfield Grand Prix car after the race started.)
 * "Forgive and Regret" (6th yowl heard once as Snowball hisses and swipes at Homer after finding her in his used car at the dealership.)