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Dogs have cold, wet noses as part of their bodies' cooling system, and to improve their sense of smell.
The presence of moisture on the nose and its slow evaporation helps keep dogs cool. The layer of mucus on a dog's nose can also act as a filter for scent molecules, helping the dog to identify smells more efficiently.

Why are dogs' noses wet? | Cesar's Way

www.cesarsway.com/dog-psychology/nose-eyes-ears/why-are-dogs-noses-wet

Have you ever wondered why dogs' noses are wet, though? Your nose works perfectly fine dry, so what's up with their sniffers? It turns out that there are many ...

Why Dogs Have Wet Noses | DogHealth.com

www.doghealth.com/how-and-why/why-dogs-have-wet-noses

Is your dog sick if he has a dry nose? Find out why dogs have wet noses and what it means if they aren't.

Why Does My Dog Have a Wet Nose? - Vetstreet

www.vetstreet.com/our-pet-experts/why-does-my-dog-have-a-wet-nose

Jun 19, 2012 ... Dog noses secrete a thin layer of mucus that helps to absorb scent chemicals, says Dr. Brittany King. We explain why canine noses tend to be ...

Facts about a Dog's Dry Nose: Dog Care | Hill's Pet

www.hillspet.com/en/us/dog-care/healthcare/dry-dog-nose-concerns

A healthy dog's nose can fluctuate between wet and dry several times over the course of a day. Just like we experience dry noses with our allergies or variability  ...

Is a Dog's Hot Nose a Sign of Illness? - Pets - WebMD

pets.webmd.com/features/dogs-hot-nose

A: The common belief that a healthy dog has a cold, wet nose and a sick dog has a hot, dry ... But a dog can be perfectly healthy and have a warm, dry nose.

Why Do Dogs Have Wet Noses? | Wonderopolis

wonderopolis.org/wonder/why-do-dogs-have-wet-noses

Dogs' noses are often cold and wet. Why is that? Many people believe that dogs' noses should always be cold and wet and, if it's not, it's a sign that they're sick.

6 Reasons Your Dog Might Have a Dry Nose - Petful

www.petful.com/pet-health/why-does-dog-have-dry-nose/

Mar 1, 2016 ... Many people worry that their dog's nose is too dry, or too wet, or too warm, or too cool. Let's face it: We worry when something is different or “off” ...

www.ask.com/youtube?q=Why Is a Dog's Nose Wet?&v=Cczn2KGjjLE
Jul 7, 2015 ... Does a wet nose always mean a healthy dog? Should you be worried if your dog has a really dry nose? Dr. Mel answers these common ...

My dog has a cold, wet nose… Why? | The Pet Hospitals

thepethospitals.com/blog/wet-nose/

Mar 25, 2016 ... Your dog's wet nose may or may not be a symptom of other things going on in the body. Let The Pet Hospitals vets explain their wet, cold nose.