I have two male piggies that are approx. 2 years old. One was sitting with me a minute ago (before i put him back to write this) and he was pooping. I instantly noticed how foul it smelled, and it smeared a little bit on the pad he was on. His poop smelled a lot worse than usual and I've been noticing it quite a bit recently. It's also softer and lighter than usual. I give them lettuce daily, occasionally they get green peppers. They got some this morning for the first time in a while. Usually I'd assume that maybe my piggie is sensitive to green pepper, but they've been having it pretty much ever since we got them and they never had a problem with it. They get hay at normal times, always have clean water, and they get a scoop of pellets nightly. None of this is abnormal. What could this be? Thanks.