Intestinal parasites and parasites of other internal organs can be prevented. But if your best friend should pick up roundworms, giardia, tapeworm, pinworm, coccidia or other common intestinal parasites, they can be successfully treated. A fecal exam lets you know for sure. If you are the winning bidder, collect a fresh stool sample from your pet and bring it to Arbor Ridge clinic within 12 hours for testing.