| 11. | Natural definitive hosts are fish-eating animals : cats, and humans.
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| 12. | This stage is infective to the definitive host.
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| 13. | Acquisition of the parasite occurs more frequently among definitive hosts than among intermediate hosts.
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| 14. | Adult flukes occur in the liver of the definitive host and feed on blood.
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| 15. | Ingestion of infected intermediate host tissue by the definitive host completes the life cycle.
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| 16. | Often the definitive host is a predator and the intermediate host is its prey.
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| 17. | Detailed life cycle studies have not been carried out with wild animal definitive hosts.
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| 18. | They are intestinal parasites in the definitive host.
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| 19. | Experimental definitive hosts are : dogs and cats.
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| 20. | Unlike intermediate hosts, definitive hosts are usually not hurt very much by the infection.
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