What does it mean when poop is green?
Your stool can be green if you ate green things, such as spinach.
Green poop can be dangerous in massive amounts. If you poop once a day for a week and you have green poop 3 out of the 7 days, that's fine. But if you take a poop and plug the toilet with green poop than that is too much. You might want to get yourself checked for the swine flu cause you probably have it
This is normal for this animal. They eat green food so they are going to poop green poop. It is a good thing. Any other color would mean that the pet is not healthy. I strongly disagree here because green poo means too much watery foods. Guinea pig poo should be long and hin and a brown/dark brown colour. It would be best to cut down on watery foods e.g. cucumber.