What Human Food Can A Guinea Pig Eat?

For treats or supplements, they like carrots, cheese puffs, cheerios, apples, cherries, blueberries, lettuce, greens, grapes, and especially dried fruit and nut mixes (like trail mix) are great for pigs. Just don't over feed these things, because anything in high volume is bad for anyone, and pigs are no exception. Also, if you give them something to try and they turn their nose up at it, take the item away and try again another time. Don't leave items in their cage for too long because you risk having it contaminated, and like children, they don't always want to try something new the first time (or even the first dozen times) you offer it.

Well by human food I hope you mean fruits and vegetables. But they can have up to 3 peices a day.

Lettuce, celery, parsley, carrots, apples, pears, green pepper, broccoli stems, green cabbage, corn, and cucumbers (just to name a few) are all okay for guinea pigs in small portions. Never give a guinea pig grapes, blueberries, bananas, or daffodil. The occasional tomato slice is okay but too much may cause stomach flu or diarrhea. And don't give the guinea pig any part of the tomato plant but the tomato.