Roundworms are parasitic organisms that live in the intestines of animals (including humans). The raccoon roundworm lives in the intestines of raccoons. The roundworm survives by feeding on nutrients that the raccoon has digested. The roundworm lays eggs (upwards of 100,000 per day) in the intestine of the raccoon, which are then shed through the raccoon's feces. A raccoon can shed millions of eggs per day, depending upon how many roundworms are present it its intestines. In general, raccoon roundworms do not harm the raccoon host, other than by using some of the nutrients that the raccoon has eaten.