Dogs smell it, roll in it, walk in it, even ingest it. And, often times, pick up serious diseases from it. Animal feces are one of the most common sources of the following diseases:
The best way to prevent these, and the many bacterial infections dogs can acquire from stools, is to remove feces immediately and keep your dog current on his vaccinations, fecal examinations and deworming. Also, pick up waste before a rain, which breaks up or scatters the feces and allows the worms or germs to spread into the environment.
Here are my favorite “Pick Up After Your Dog” signs I found on Google Chrome: