Ducky’s stomach growls in front of Littlefoot just before they encounter Petrie.
Not only does it happen to Ducky again in the sequel, but it happens to Petrie as well.
In The Lion King, Banzai's stomach growls while he’s waiting with the other hyenas to start the wildebeest stampede.
Also in The Lion King 1 1/2, Pumbaa's stomach gurgles a couple times before he lets out a big fart causing all the animals crowding him and Timon to faint. Some of the other animals saw them fainting and thought they were bowing and decided to bow with them.
Happens to Elliott the clumsy but kind-hearted dragon in the 1977 Petes Dragon when he drinks some sort of an alcoholic beverage offered by Hoagie and Lampie, causing his tummy to rumble, wiggle and shake which triggers a fiery belch chasing them away.