system
Given the following post, respond as if you're commenting on Reddit:
human
Why do dogs stink?

I never bathe my cats, and they don't stink. But if Fido goes a month or two he smells awful. Even indoor, dainty dogs who would never deign to eat poop or roll in dead stuff, smell foul after a while, and dogs don't sweat, do they? So what gives? What causes that funky dog aroma?
gpt
Hi there !

Dogs have natural odors used for animal recognition and for scent-marking territory. Actually all canids do (wolves, foxes, coyotes, etc..). They produce these odors through their nose, ears and paw pads.

They also produce unnatural odors and this may come from very diverse reasons :

* Breath (kidney failures or diabetes may cause a change in breath odor)
* Dental diseases and gums can also produce a foul odor
* Infected ears
* Flatulence 
* Anal glands or Anal sacs. This is the more common cause of stinkyness. Dogs have 2 small anal sacs near the anus. They can become infected or impacted and they'll secrete a smelly oily substance on the surrounding fur causing very bad odor.

You need to be able to recognize an odd odor from your dog so that you can take him to the veterinarian, even if you're not sure.

*An ounce of prevention is definitely better than a pound of cure.*