TED-Ed: How do dogs "see" with their noses? - Alexandra Horowitz

The video explores how dogs experience the world primarily through their advanced sense of smell. It details the structure and function of a dog's nose, highlighting their ability to detect and process scents far beyond human capability. The video also discusses the vomeronasal organ, which allows dogs to sense hormones and emotions, and how dogs can perceive time through scent trails. Finally, it showcases the collaboration between dogs and humans, where dogs use their olfactory skills to assist in various tasks, from detecting threats to identifying medical conditions.

What unique feature of a dog's nose helps it determine the direction of a scent?

• The ability to smell separately with each nostril

• The moist, spongy texture of the nose

• The size of the dog's nose

• The ability to smell with both nostrils simultaneously

How does a dog's olfactory system compare to that of humans?

• Dogs have the same olfactory system as humans

• Dogs have significantly more olfactory receptor cells than humans

• Dogs have a similar number of olfactory receptor cells as humans

• Dogs have fewer olfactory receptor cells than humans

What is the vomeronasal organ responsible for detecting?

• Hormones released by animals

• The temperature of the environment

• Scents from food

• The direction of the wind

How can dogs perceive the past through their sense of smell?

• By identifying tracks and residues left by passersby

• By recognizing the scent of other animals

• By detecting the scent of food

• By smelling the air for changes in weather

In what way can dogs assist humans using their sense of smell?

• By predicting the weather

• By identifying invisible threats like bombs or diseases

• By communicating with other animals

• By finding lost objects