How can a dog sniff out things and people?

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They possess some 300 million olfactory receptors in their noses, compared to about six million in humans. And the part of a dog's brain that is devoted to analyzing smells is, proportionally speaking, some 40 times greater than ours making them able to pick up trace smells many time fainter than ours can

Why do dogs sniff each other?

because they eat bannanas! I'm sorry... but whoever did that i automatically classify as annoying. But anyhoo, dogs sniff each other to get eachothers scent and sometimes t

Why do dogs sniff other dogs?

Because they want to know what kind of dog they are. It's just a way of them getting to know each other.

Why do dogs sniff?

because they rely mostly on scent. sence their vision is black and white.

Why do dogs sniff people?

That is their way of identifying you and learning who you are so they will recognize you later.

Why does your dogs sniffs things when you walk it?

Dogs sniff things because this is how they find out about their environment. By smelling the telephone at the end of your street they can tell how many male dogs have peed on

Why do dogs sniff urine?

To get an idea of the other dogs in the neighborhood. Urinating on things is a dog's way of dropping his business card on another dog's desk, as it were.