Mon Prof Augmenté
Dog’s Second Smell Organ
Open to everyone until Monday, September 28
To keep it, print it while it is open.
Dogs have a special sac above the roof of the mouth that detects pheromones. These chemical messages carry information about another animal’s identity, sex, and reproductive state.
In the picture
- The vomeronasal organ above the mouth roof: a sac that receives pheromone molecules.
- The nostril: an opening where airborne molecules enter the nasal passage.
- The thin nerve pathway: a route that carries signals from the sac toward the brain.
- The brain: the region that receives and interprets the signals.
Examples
- A dog sniffs a spot where another dog urinated.
- A dog greets another dog by sniffing its rear.
Key takeaways
- The vomeronasal organ is separate from the main smell system.
- It detects pheromones that can reveal identity, sex, and reproductive state.
Carry on in the app
Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
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