**Ask a monkey a physics question thread**

[OngBonga]

If dogs have such better sense of smell than we do, how come they have no problem sniffing their own shit right after doing it, while I can't even hack their farts?

[MadMojoMonkey]

If dogs have such better sense of smell than we do, how come they have no problem sniffing their own shit right after doing it, while I can't even hack their farts?

I know you like to think that your shit don't stink.

I'm no expert on dogs or biology, but the way I understand it, dogs use their sense of smell like we would read. So a dog smelling something is like a dog reading an article about that thing's past. A dog stopping to smell stuff while you're walking them is akin to them spotting an interesting picture on the cover of a newspaper and stopping to read the headline.

Also, dogs eat poo, so I'm not convinced that my answer is complete.