Back in my consulting days, there was a facility in the Caribbean that I worked with that disposed sludge that came from a wastewater plant at a tuna processing facility. Nasty-smelling stuff! The healthiest dog that I ever saw at that facility routinely ate sludge that dripped here and there from the truck!
While I never would want a dog I owned to eat that, my point is, a dog's constitution is usually pretty durable. I definitely agree with Nobbie!