The word foaming appears 2 times in the Douay-Rheims Bible. The first 2 matching verses are shown below.
Mark 9:19And they brought him. And when he had seen him, immediately the spirit troubled him and being thrown down upon the ground, he rolled about foaming.
Jude 1:13Raging waves of the sea, foaming out their own confusion: wandering stars, to whom the storm of darkness is reserved for ever.