I have heard my little Crowley fart a few times now, the first time I heard it (he was also pooping so i dunno if it counts) he farted so loud I thought someone was moving furniture downstairs. I went to look at him and he had his whole back end of his body moving just to let it all out. Any other time I didn't really hear it but I smelled it and it was stinky. I also gave him a bath one time and he was making so many bubbles it made me laugh, I'm sure that bath felt nice for him to let go like that.