Would you like to switch to the accessible version of this site?

Go to accessible site Close modal window

Don't need the accessible version of this site?

Hide the accessibility button Close modal window
Accessibility View Close toolbar
Glastonbury Animal Hospital

55 Grove Street

Glastonbury, CT 06033 US

860-633-8394

Open mobile navigation
  • Home
  • About Us
    • Meet Our Doctors
  • New Patient Center
    • Online Forms
    • What to Expect
    • Payment Options
  • Veterinary Resources
    • Alternatives to Declawing
    • Canine Influenza
    • Diseases and Medical Information
    • FDA Dog Food Notice
    • General Information
    • Specialists and Referral Centers
    • The Hard Conversation
  • Services
    • Dental Care
    • Wellness Care
  • Contact Us
  • Virtual Office Tour
  • Research Community
  • Testimonials
  • Veterinary Topics
    • We Help Your Pet With
      • Chronic Conditions
      • Digestive and Oral Health
      • Diseases and Viruses
      • Pests and Parasites
      • Orthopedics
    • Today's Veterinarian
    • Choosing Your Pet
      • Birds
      • Cats
      • Dogs
      • Ferrets
      • Rabbits
      • Reptiles
        • Lizards
        • Turtles
    • Living With Your Pet
      • Bringing Your Pet Home
      • Providing Care
      • Travel
      • Saying Goodbye
    • Finding Your Pet
    • Newsletter Library
      • Tips for Pet Owners
      • Fun with Pets
      • Equine
      • Visiting the Vet
      • Unbelievable Pets
      • Seasonal Topics
      • Pet Dangers
      • Nutrition & Food
      • Recognizing Illness
      • Cats
      • Keeping Pets Healthy
      • Fleas & Parasites
      • Behavior & Training
    • Video Newsroom
      • Health Topics
      • Technology and Science
      • Other Interests
    • Client Survey
    • Pets4Kids
    • Feline
  • Home >
  • Articles >
  • Newsletter Library >
  • Unbelievable Pets >
  • The Incredible Sense of Smell in the Dog

The Incredible Sense of Smell in the Dog

  • Created in Newsletter Library, Unbelievable Pets
Image of a dog smelling the air.

There are many ways in which people and dogs are similar, but an area in which dogs are much superior is in their olfactory ability, or their sense of smell. Dogs can smell 100,000 times better than humans. In tests, dogs have been able to detect a chemical in a solution diluted to 1 to 2 parts per trillion. The human brain has a large area devoted to vision, while dogs have a large portion dedicated to olfaction, in fact, 40% more of a dog's brain than a human's is committed to smell. The average person has 5 million smell receptors, while the average dog, depending on breed, has 125 to 250 million smell receptors. The Bloodhound has an incredible 300 million smell receptors! Dogs can smell things up to 40 feet underground. Dogs can even smell human fingerprints that are a week old!

Part of the reason dogs have an excellent sense of smell is the moist leathery surface of the nose determines the direction of air currents. Also sniffing brings air with scents directly into the nostrils and then onto the moist surfaces inside the nasal cavity which catches the molecules so the dog's internal receptors can decode them. It is believed that even long ear flaps can help their sense of smell by stirring up odors close to the ground.
People have taken advantage of this incredible sense of smell and trained dogs to detect certain odors. One of the more unusual objects that dogs have been trained to find is whale feces.

Whale researchers for years have been stymied by their inability to test whales in the wild. It was then discovered that whale poop could give them information on diet, genetics, hormone status, level of toxins, etc. But how to find enough whale feces to get significant findings? Whale feces floats for only about 30 minutes. One research group found only five samples in two weeks by searching on their own. Then Tucker and Fargo came into their lives. Tucker is a Labrador mix -breed dog who searches for Orca whale feces in Puget Sound, and Fargo is a Rottweiler who finds right whale poop in the North Atlantic.

With the dogs on board, the research teams have found as many as 12 samples a day. At first their success rate was less, only because the researchers underestimated the distance at which the dog could detect the odor. With time the researchers learned that when the dog signaled , they should point the boat in the direction of the dog's nose and keep going until they found the feces; this has been as far as 1.2 miles. As one researcher said," The lowest-tech method turns out to be the most effective." Findings from these studies show that the orcas have had a drop in thyroid hormone; the researchers attribute this to a poor food supply. This could explain why orcas had a 20% decline in population in the last decade in Puget Sound.

The Atlantic study has not found the reason for the poor reproduction of the right whale since a hunting ban went into effect 70 years ago. From a low of 100 whales, the population is now only about 300, while 100,000 used to swim those waters. Research continues as long as the dogs keep finding samples!
Another amazing example of dogs detecting unusual things is the study that showed that dogs can identify people with cancer by smelling the person's breath or urine. The person's breath was used to find lung and breast cancer; urine was used to detect bladder or prostate cancer. The dogs were accurate 99% of the time for lung cancer, and 88% of the time for breast cancer! This is equal or better than high tech techniques such as scans. This study was done with only two to three weeks training using pet dogs and the only previous preparation was basic puppy training.
For centuries dogs have helped people with hunting, herding, and protection. These examples clearly show that dogs are capable of much more. Only our imaginations may limit what dogs might do in the future.

  • We Help Your Pet With
    • Chronic Conditions
    • Digestive and Oral Health
    • Diseases and Viruses
    • Pests and Parasites
    • Orthopedics
  • Today's Veterinarian
  • Choosing Your Pet
    • Birds
    • Cats
    • Dogs
    • Ferrets
    • Rabbits
    • Reptiles
      • Lizards
      • Turtles
  • Living With Your Pet
    • Bringing Your Pet Home
    • Providing Care
    • Travel
    • Saying Goodbye
  • Finding Your Pet
  • Newsletter Library
    • Tips for Pet Owners
    • Fun with Pets
    • Equine
    • Visiting the Vet
    • Unbelievable Pets
    • Seasonal Topics
    • Pet Dangers
    • Nutrition & Food
    • Recognizing Illness
    • Cats
    • Keeping Pets Healthy
    • Fleas & Parasites
    • Behavior & Training
  • Video Newsroom
    • Health Topics
    • Technology and Science
    • Other Interests
  • Client Survey
  • Pets4Kids
  • Feline

Services

  • Make An Appointment

    We will do our best to accommodate your busy schedule. Schedule an appointment today!

  • Our Online Pharmacy

    Click here to shop our online pharmacy now!

    Click here!
  • Online Forms

    Our patient forms are available online so they can be completed in the convenience of your own home or office.

Business Hours

Monday:

8:00 am-6:00 pm

Tuesday:

8:00 am-6:00 pm

Wednesday:

8:00 am-6:00 pm

Thursday:

8:00 am-6:00 pm

Friday:

8:00 am-6:00 pm

Saturday:

8:00 am-12:00 pm

Sunday:

Closed

Location

Find us on the map

Pet Selector

Featured Articles

Read about interesting topics

  • Preparing For Pet Dental Month

    Not sure if your pet needs a dental exam? These 10 reasons may help you make a decision. ...

    Read More
  • How To Care For Your New Pet

    Wondering how to care for your new pet? Check out our recommendations! ...

    Read More
  • Does My Cat Love Me?

    Not sure how your cat feels about you? Learn how your pet shows affection. ...

    Read More
  • Medication Tips For Your Pet

    Do you have trouble giving your pets their medications? These tips may help. ...

    Read More
  • What Vaccines Are Right For Your Pet?

    Wondering which vaccines your pet needs? Take a look at our list. ...

    Read More
  • Is My Dog Fat Or Is It A Thyroid Problem?

    Wondering why your dog is packing on the pounds? A thyroid problem may be responsible for the weight gain. ...

    Read More
  • Hot Spots and Pets: What You Can Do to Help Your Furry Friend

    Does your pet frequently develop hot spots? Find out how to prevent and treat the painful spots. ...

    Read More
  • Managing Your Pet's Arthritis

    Painful arthritis makes walking and jumping difficult for pets. Luckily, you can do a few things to relieve your pet's pain. ...

    Read More
  • Best Pet Costumes

    Are you thinking about buying a Halloween costume for your pet? These guidelines will help you choose the ideal disguise for your furry friend. ...

    Read More
  • Why A Vet Is Your Best Defense During A Zombie Apocalypse

    Could your veterinarian help you survive a zombie apocalypse? ...

    Read More

Newsletter Signup

Sign up for more articles

Connect With Us

  • Copyright © 2019 MH Sub I, LLC dba iMatrix.
  • Admin Log In
  • Privacy Policy
  • Terms of Use
  • Cookie Policy
  • Site Map