One Dog Creates 274 Pounds of Waste Each Year — and We Now Know It’s Taking Its Toll on the Environment

Different dogs isolated on white
Dora Zett/Shutterstock.com

Written by Doug Shaffer

Published: May 10, 2025

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Dogs have always held a special place in the hearts of humans, dating back hundreds of years. While today’s pups may not serve the same roles as their ancestors, they remain an essential part of homes around the world.

With their infectious smiles and wagging tails, it’s easy to see why so many families welcome dogs into their lives. But a recent study by Curtin University showcasing the link between dogs and the environment might shift how we view our canine friends.

Let’s take a look at the study’s key findings, explore what they mean for dog owners, and get some practical next steps we can take to reduce our pets’ environmental footprint.

Owner Clearing Dog Mess With Pooper Scooper

Dog waste is a key issue in a new study from Curtin University.

Key Findings from Curtin University Study

Taking our pets on walks and letting them play outside is a must for a happy and healthy pup. On the surface, there don’t seem to be any negatives associated with spending a little time outdoors. However, new research from Curtin University is challenging this assumption.

According to lead researcher Associate Professor Bill Bateman, “Dogs pose a substantial and complex environmental threat.” The study further explains that there are several ways in which pets impact the environment, including:

  • Wildlife Disturbance: Regardless of whether an owner leashes their dog or not, the animal can still disrupt local wildlife through their presence, scents, and waste.
  • Pollution: Leftover dog waste often contributes to nutrient pollution in waterways, and chemical runoff from flea and tick treatments can harm aquatic ecosystems.
  • Carbon Footprint: While not a direct result of just dogs, large pet food manufacturers are steadily increasing their carbon, land, and water footprint to keep up with demand.

What are the Implications for Dog Owners?

Initially, the study may feel like a biased report against dogs. However, dog owners shouldn’t see the research as an agenda to lock up their furry friends. Instead, it’s an opportunity to rethink how we approach our daily routines with our pets and make more environmentally responsible choices.

Leash Laws to Lower Wildlife Disturbance

Regardless of how well-trained a dog might be, keeping them on a leash is still a good idea, especially in designated areas. Allowing canines to roam off-leash in parks, forests, or nature reserves may seem harmless enough, but it can significantly impact local wildlife. For instance, even the scent or presence of a dog can alter animal behavior, disrupt nesting, or cause stress to species sensitive to predators.

Associate Professor Bateman touches on this further by stating, “Studies have found animals like deer, foxes, and bobcats in the U.S. are less active or completely avoid areas where dogs are regularly walked, even in the absence of the dogs.”

Leash Laws: What Can Owners Do to Help

While general safety tends to be the top reason for leashing your dog, it can also help protect local wildlife. Keeping dogs on a leash during visits to the park or a trail helps minimize the disturbance to birds, mammals, and other sensitive species.

Adorable cockapoo on a leash on the grass, cute puppy on greenery, selective focus

Impact of Dog Waste on Water Quality

Coming across any type of waste on a hiking trail can be an unpleasant experience for someone trying to get a little exercise in. However, dog waste not only inconveniences walkers but can also be a major source of nutrient pollution. When left on the ground, waste can easily wash into nearby water sources, introducing excess nitrogen and bacteria into local aquatic systems.

Dog Waste: What Can Owners Do to Help

The easiest way to keep dog waste out of water systems is to clean up after your pet. Before leaving the house, it’s always a good idea to grab extra biodegradable waste bags for your walk and dispose of any waste in a trash can.

Compostable dog poop bags dispenser on white

Compostable dog poop bags are an eco-friendly solution for pet owners.

Sustainable Pet Food Choices

One of the hottest debated topics in the pet world is what food we should feed our dogs. While everyone can agree that we want the best quality food for our furry friends, that doesn’t always equate to a positive environmental outcome. Many large pet food production companies have significant carbon, land, and water footprints.

Pet Food: What Can Owners Do to Help?

It can be challenging for pet owners to identify which pet manufacturers have the lowest footprints and impact on the environment. If you’re looking for a more responsible dog food supplier, choose brands that use sustainable ingredients and offer low-impact proteins like chicken.

Irish Setter Eating Dog Food

Purchasing quality dog food from a company with as minimal a carbon footprint as possible is ideal.

Balancing Dog Ownership and Environmental Awareness

The research from Curtin University shouldn’t be viewed negatively. Instead, it offers a look into the greater environmental impact of our canines. Owners can make a meaningful difference in local communities through simple actions like following leash laws, picking up after their dogs, and choosing sustainable food products. Everyone benefits from simple changes such as those.

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About the Author

Doug Shaffer

Doug Shaffer is a writer for A-Z-Animals.com, primarily covering marine life, reptiles, and insects. Doug has been writing and researching about animals for over 4 years and holds a Master's Degree from Bowling Green State University, which he earned in 2016. A resident of Ohio, Doug enjoys exploring wilderness trails with his family and helping his two-year-old son experience the beauty of nature.

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