Science+Fair+EE

My science fair topic is on dogs and how well their scent works.

__**My Hypothesis:**__ If I hid a dog treat in the house after letting the dog sniff it, then it will only take about 45-55 seconds for them to find it.

__**Notes:**__

__**Source 1:**__ http://www.dogbreedinfo.com/articles/dogsenses.htm
 * A dog's sense of smell is way more sensitive then ours.
 * The part that controls the dog's smell is 40 larger then a human.
 * While we smell one big thing, dogs can smell each small piece in that one big thing.
 * Dogs can move their nostrils so that way they can follow the scent in every direction.
 * Dogs rely on their smell more then sight which is the opposite for us.
 * We have about 5 million scent glands but dogs have a range from 125 to 300 million scent glands.
 * Dogs can smell extraordinary things like cancer and save peoples lives.

__**Source 2:**__ @http://www.muddypawscaninecenter.com/DogFacts.htm
 * When dog's sniff something, they get the entire back story. Like when a person has visited another dog, they can get the whole story of the dog without even meeting the dog.
 * Sniffing and breathing are two different things for dogs. When they breath, its for air in their lungs, but when they sniff, they save that scent from exhaling.
 * Dogs that are blind are just fine since they use their sense of smell rather then sight.
 * When a dog smells a human and know they have been with another dog or person,they can tell if it's male or female, what they have ate, what they have touched, etc.
 * When dogs get their whiskers cut off in grooming, it does not affect their smelling sense at all.

__**Source 3:**__ @http://www.pbs.org/wgbh/nova/nature/dogs-sense-of-smell.html
 * When a dog sniffs something, it separates the scent to distinct paths.
 * The dog's brain analyzes scents 40 times greater then us.
 * When we smell something, we breath in the same airways where as dogs a piece of tissue separates the air and the scent.
 * When we exhale, it comes out the same way it came in but with dogs, they separate the smell from oxygen.

@http://www.savets.org/Pages/DogsIncredibleSenseofSmell.aspx
 * __Source 4:__**
 * Humans have a large area in their brain just for vision, while dogs have a large area for smelling.
 * Dogs who have long ears help the sense of smell by stirring the scents close to the ground.
 * The moist leathery skin of their nose helps the dog find air currents from where the scent is coming from.
 * When dogs sniff, it brings the scent directly to their nostrils.


 * __Source 5:__**


 * "Inside of a Dog: What Dogs See, Smell, and Know" By Alexander Horowitz**

This book is an over all summary of what goes inside of the mind of a dog. It talks about what dogs see, smell, and what they know.

=**Works Cited**=

Horowitz, Alexandra. "Sniff." //Inside of a Dog: What Dogs See, Smell, and Know //. New York: Scribner, 2009. 67-88. Print.  
 * This is a good site because it is written by an animal behaviorist.

Maguire, Sharon. "Understanding a Dog's Senses." // Understanding a Dog's Senses //. Dog Breed Info Center, n.d. Web. 24 Sept. 2013. . 
 * I know this website is true because it is written by a dog expert at a dog rescue center.

Maguire, Sharon. "Understanding a Dog's Senses." //Dog Facts //. Muddy Paws Canine Center, n.d. Web. 25 Sept. 2013. . 
 * This is a great source because it is written by an author whose information matches with other cites.

Tyson, Peter. "Dogs' Dazzling Sense of Smell." // PBS //. PBS, 02 Oct. 2012. Web. 08 Oct. 2013. .


 * This is a good site because it is written by a well known network.

Young, James K., and Philip W. Martin. "Marbach Road Animal Hospital." // Dog's Incredible Sense of Smell //. Marbach Road Animal Hospital, n.d. Web. 16 Oct. 2013. <http://www.savets.org/Pages/DogsIncredibleSenseofSmell.aspx>.


 * This is a great source because it is written by two veterinarians.

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