Final answer:
Trichuris vulpis, or whipworm, inhabits the cecum, which is part of the large intestine in dogs, foxes, and coyotes.
Step-by-step explanation:
Trichuris vulpis, commonly known as the whipworm that can infect dogs, foxes, and coyotes, can be found in the cecum. The cecum is a pouch forming the beginning of the large intestine where the whipworm takes up residence once the eggs are ingested and larvae emerge.