[zoyd]

That's a really awful job for mans best friend! ;-)

To paraphrase Adam Carolla, to dogs, it probably smells like pizza, given the stuff they seem to enjoy sniffing.

He also had a great plan to train dogs to sniff out Arabs at the Mexican border, to prevent terrorists from sneaking in as Mexican laborers. It soon expanded to training sharks (with their 'smell a drop of blood in the ocean' capabilities) to do the same in the oceans...

Adam has some very non-PC ideas...

For those who don't know him, Carolla is one of the creators of Crank Yankers, and a former host of The Man Show.

[TASMANIANRED]

There is a huge variety in the the amount of smell receptors that dogs have. Little pushed in face dogs have fewer and the long snouted ones have more. Also the olfactory center in a dogs brain is about 4 times larger than a humans.

I good whiff of something good and stinky is the equivalent of a novel to a dog. They know about where you went, what emotions you experienced, what you ate, if you are healthy or not, if who you visited was healthy or not, they can tell intention by the aromas someone gives off..

The next time your pooch sticks his nose up a visitors butt and embarrasses you, just soothe your injured ego with this:
Your dog probably knows more about a visitor in one good sniff than you could find out in a year.