Fergie has been on Prednisone for three days for her back injury. She is doing fabulous and shows no signs of injury at this time. I'm not sure if this is a side effect of the Prednisone or if there is another cause, but she has the worst gas ever! We are not talking about a little toot now and then, but whole house permeating odiferous flatulence. There has been no recent changes to her diet and the only cause I can come up with is the Prednisone. Our dogs will get gassy if they find an errant duck egg in the yard and have a snack, but we are blanketed in snow and I don't think the ducks have laid eggs since late summer. Is there anyone out there who has had a dog on Prednisone and experience a similar stinky side effect?