Pet dogs harm wildlife, ecosystem and climate; suggests study

In households across the world, pet dogs are cherished companions. They are loyal, playful, and often considered part of the family. But behind their wagging tails and heartwarming presence lies an uncomfortable truth: pet dogs may be contributing more to environmental damage than we realise.
A new study from Curtin University has sounded the alarm, revealing that pet dogs, while offering companionship and support, also pose significant ecological threats. As the most widespread large carnivores on the planet, their collective environmental footprint is far greater than most owners suspect.

Lead researcher Associate Professor Bill Bateman from Curtin’s School of Molecular and Life Sciences explains that even well-behaved dogs when walked on a leash, can disrupt local wildlife. Shorebirds, for instance, are particularly vulnerable, fleeing or avoiding areas where dogs are present, sometimes long after the dogs are gone.
“Dogs leave behind more than just paw prints,” says Bateman. “Their scent, urine, and faeces can change animal behaviour, making wildlife avoid habitats they need to survive.”
Dog waste, apart from being unpleasant, contributes to pollution in waterways and hampers plant growth. Chemicals from shampoos, flea treatments, and grooming products often wash off into aquatic environments, introducing toxins that disrupt delicate ecosystems.

Beyond daily walks and waste, there’s a larger system at play. The pet food industry, driven by the vast global population of dogs, consumes enormous resources, land, water, and energy. Feeding our furry friends contributes to a significant carbon footprint, one that rivals some of the world’s biggest industries.
Despite this, awareness among dog owners remains low. Only 12 to 16 percent are willing to spend more on eco-friendly pet food options, according to the study, largely due to rising costs and limited access to sustainable products.

So, should we feel guilty for loving our dogs? Not at all, says Bateman.
“Dogs play a vital role in many people’s lives. They’re companions, and protectors, and even work alongside humans in conservation as detection dogs. But with their numbers increasing and awareness lacking, the environmental impact is becoming too large to ignore.”
The researchers are calling for a collaborative approach, one that brings together dog owners, conservationists, and policymakers to find practical solutions. These might include better-designed parks, designated wildlife zones, more sustainable pet products, and public education campaigns.

If you’re a dog lover, there are simple steps you can take to help reduce your pet’s impact:
• Stick to designated walking areas and keep dogs leashed in sensitive wildlife zones.
• Pick up after your dog, always.
• Choose eco-friendly grooming products and pet food when possible.
• Support policies that protect natural habitats while allowing responsible pet ownership.
Dogs bring joy, comfort, and connection to millions around the world. With a little awareness and effort, we can make sure that love doesn’t come at the cost of the environment.
After all, protecting the planet is something we can all get our paws on.
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