Dog poop is considered hazardous waste by many. Dog poop is a natural by-product of a dog's digestive system and can contain a variety of pollutants, including bacteria and parasites. Some people believe that dog poop should not be considered a waste because it is a natural product of a dog's digestive system and can be composted. Others believe that dog poop should be considered a waste because it can contain harmful pollutants and it can be a nuisance to clean up.