How do Dogs See with Their Noses?

What helps a dog determine the direction of a smell?

• Their ability to hear high-pitched sounds

• Their ability to smell separately with each nostril

• Their ability to see in the dark

• Their ability to taste different flavors

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How does a dog's olfactory system compare to a human's?

• Dogs have a tiny olfactory bulb.

• Dogs and humans have the same olfactory system.

• Dogs have a larger portion of their brain dedicated to smells.

• Humans have a more complex olfactory system.

What can a dog's vomeronasal organ detect?

• The taste of different foods

• The sound of distant noises

• The color of objects

• The hormones released by animals

How can a dog's nose help them understand the past?

• By hearing sounds from the past

• By seeing tracks left by passersby

• By smelling tracks and residues left by passersby

• By tasting the air

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What is one way dogs can assist humans using their sense of smell?

• By painting pictures

• By detecting invisible threats like bombs

• By singing songs

• By writing stories

A dog's nose is different from a human's nose. (select all the right supporting reasons)

• The outside is moist.

• The outside is spongy.

• Each nostril can smell independently of the other.

• The nose is pointy.

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A dog has over ​ (a)   smell receptors, but a human only has about ​ (b)   .

• 300 million
• 60 million
• 5 million

A the smells around a landmark on the dog's walk reveals who has ​ (a)   , what they've been ​ (b)   , and how they were​ (c)   .

• been there
• feeling
• eating

Dogs can smell _________ __ ________ on the breeze, long before they are seen.

• nothing

• someone is coming

• only other dogs

• but can't understand what is