| 1. | Baleen whales have a small, yet functional, vomeronasal organ.
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| 2. | This phenomenon may prepare the vomeronasal organ for increased detection of pheromones.
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| 3. | The vomeronasal organ of mammals is generally similar to that of reptiles.
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| 4. | But no one knows why the vomeronasal organ should have two detection systems.
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| 5. | Many vomeronasal neurons are activated by chemicals in urine.
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| 6. | Behind these are an additional set of vomeronasal sacs.
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| 7. | Cats detect nepetalactone through their olfactory epithelium, not through their vomeronasal organ.
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| 8. | The ewe uses her vomeronasal organ for early recognition of her neonate lamb.
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| 9. | This would allow pheromones to be more easily transferred to the vomeronasal organ.
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| 10. | Vomeronasal receptors bind and are activated by pheromones such as androstenone and androstenol.
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