This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
The definitive host for echinococcus granulosus is: September 2012 
Select and explain. 
A. Man, B. Sheep, C. Hound, D. Dog
D: Dog
Answer: D: Dog 
Explanation: Ans: D i.e. Dog Canids (dogs, dingoes, wolves, and coyotes) act as definitive hosts for adult worms, while omnivorous/herbivorous mammals (humans, domestic animals and wildlife) serve as intermediate hosts for encysted larval stages.