Roundworm-Strongyloides (Large animals)
Common animals that act as host to this species include humans, dogs, foxes, cats, primates, rodents, horses and raccoons. A fecal sample is necessary to identify the eggs. Symptoms are not that evident, but can include itching at the point of entry, coughing, nausea and vomiting, abdominal pain, straining to defecate and weight loss. This is a common cause of colic in horses and one main reason why horse owners should worm their horses as least every quarter.