Happens multiple times on Pokémon.
Ash’s stomach growled countless times throughout the series like On Cloud Arcanine.
Ash, Meowth and Jessie in ""Plant It Now... Diglett Later".
Ash and Angie in "Camping It Up."
Pikachu's stomach growls in "Electric Shock Showdown" and "Crisis from the Underground Up".
It happened to Meowth in "Go West, Young Meowth".
Jessie's belly rumbles in "Here Comes the Squirtle Squad".
May's stomach growled in "You Never Can Taillow", "Hail to the Chef" and "Go Go Ludicolo".
Max's stomach growled in "Cutting the Ties that Blind" and "Fight for Meteorite".
Happens twice to Ash's Totodile in "The Totodile Duel".
Misty's Togepi suffers one of these on "Pikachu's Vacation".
Meowth and Bonnie's stomachs growled in the episode "So You're Having a Bad Day" of XY: Kalos Quest.
Happens many times to Dawn's Piplup as well like "Cheers on Castaways Isle", "Keeping in Top Forme", "Crossing Paths" and his debut episode.
Dawn's stomach growls at the end of "The Keystone Pops" and at the beginning of "An Egg Scrambled".
And to her Pachirisu as well, in "A Lean Mean Team Rocket Machine".
Happened to Maylene in "Crossing The Battle Line".
Happens to Shauna in "A Meditite Fight".
It's also happened to Ash's Larvitar in the episode "Here's Lookin' at you, Elekid!".
And Ash's Turtwig in "Different Strokes for Different Blokes".
Iris' Axew's stomach growls in "Scraggy and the Demanding Gothita!" of B&W: Rival Destines.
Happens to both Korrina and her Lucario in the episode "Mega Revelations" of XY.
Happens to Ash and the gang in the end of the episode "The Bamboozling Forest!".
This happens to Lilia in the episode "A Keeper for Keeps?!" of XYZ.
Sophocles gets this a lot in the Sun and Moon season.
Happens frequently to most of the gang in the episode "Lulled to La-La Land!". Lillie's stomach growled at the end of the episode.
Happens to Sophocles, Mallow and Lana in the episode "Night Of A Thousand Poses".
Happened to Mallow and Lana when they were little kids in the episode "Tasting the Bitter with the Sweet".
Team Rocket's stomachs grumble in "A Lean Mean Team Rocket Machine", "Leave It To Brocko", "A Shroomish Skirmish", "Just Waiting on a Friend", "Enlighten Up", "Will The Real Oak Please Stand Up", "A Full Course Tag Battle", "Ignorance is Blissey" and "I Choose You" movie.
Happened to a family of Pichu in the episode "The Apple Corp."
Happens to Dedenne in "A Shockingly Cheeky Friendship".
Larvitar gets this in the episode "Here's Looking at You, Elekid."
Bampy in "Hatching a Plan."
Egan in "Some Like it Hot."
Axew and Oshawott in "Danger, Sweet as Honey."