Dog waste left on streets and parks can cause grass to thin and create bare patches in soil. This pattern was explained by a veterinarian from a well-known veterinary clinic, who spoke with reporters about how uncollected dog waste impacts the environment. The expert emphasized that pet waste disrupts soil health and public spaces beyond what natural processes can quickly handle.
The veterinarian noted that dog feces contain a substantial share of proteins and fats. These components slow the breakdown process, meaning lawn and park soils accumulate contaminants faster than they can be biologically transformed. In other words, the decay of canine waste does not happen rapidly enough to prevent buildup in grassy areas used by people and pets alike.
In addition, fecal matter and soil contaminated by it provide an ideal breeding ground for a variety of microorganisms. Some of these microbes pose no clear risk to health, while others can be harmful to both humans and animals. The veterinarian pointed to specific examples of concern, highlighting how the presence of certain bacteria can travel from soil and groundwater into local aquatic systems when it rains or is washed away.
Salmonella, for instance, is frequently found in dog feces. While it may not affect the health of the dog, it can contaminate water and soil. As fecal material decomposes, bacteria can hitch rides with groundwater and surface water, reaching nearby water bodies during warm seasons. There, the bacteria may multiply and create a risk for people and pets who come into contact with the water. Helminth eggs are equally important; contaminated soil and groundwater can remain a source of infection for a long time, especially in areas with frequent exposure.
Even when a dog receives parasite treatment, its excrement can still be an environmental concern. The life cycle of many parasites is shorter than the time needed for the associated risks to diminish. This means that even treated pets may shed eggs into the environment, contributing to ongoing contamination. The level of parasite eggs released into soil and water tends to correlate with how often preventive treatments are given, and higher release levels increase the chances of infection for nearby animals and people.
Authorities have discussed the importance of community planning in North America, including the potential creation of dog-friendly spaces that are properly managed to minimize health risks. Ensuring clean play areas and routine disposal of waste helps protect soil quality, water resources, and public health—especially in urban and suburban regions where dog traffic is high.
The message from veterinary professionals is clear: responsible waste management matters not only for aesthetics but for the long-term health of soil, parks, and water systems. Regular cleaning of outdoor areas, along with timely disposal of waste, contributes to safer environments where communities can enjoy outdoor activities without risking exposure to harmful organisms. In short, proper handling of canine waste supports healthier soil, reduces contamination of water bodies, and protects the well-being of both people and animals in North American communities.