Medically reviewed by Sonal Kumar, MDColonoscopy prep is complete once your poop is a light yellow with no dark particles. You'll need to follow a specific low-residue diet to empty your colon. During ...

Ten days after arrival, 70% of the guinea pigs had loose feces and were quiet and depressed; a few had profuse yellow, watery diarrhea. Three days later, 15 young female guinea pigs were found dead.