New survey reveals over 50% of Australian dog owners fall for parasite misconceptions—here is why skipping winter protection puts your dog at risk.
As temperatures drop across Australia, many pet owners assume cooler weather brings a break from fleas, ticks, heartworm, and intestinal parasites. However, recent survey data reveals that seasonal shifts and common misconceptions may be leaving millions of dogs unprotected when they need it most.
A 2026 nationally representative study of 1,000 Australian dog owners conducted by YouGov on behalf of Zoetis Australia found that 52% of dog owners believe at least one myth about parasites. This widespread misinformation creates a major barrier to routine preventative care, with 47% of owners (equivalent to over 3 million people) admitting they hesitate to give their dogs regular parasite prevention.
5 Common Dog Parasite Myths Debunked
Myth 1: "Parasites Die Off in Winter"
The Fact: While some parasite activity slows down in cold weather, microclimates—such as heated homes, sheltered backyards, and dog parks—allow fleas, ticks, and intestinal worms to survive year-round. Heartworm, transmitted via mosquitoes, remains a continuous threat wherever vector insects find shelter indoors or near ambient warmth. Furthermore, 25% of Australians (approx. 1.8 million people) mistakenly believe they can control their pet's exposure to parasites, creating a dangerous false sense of security during cooler months.
Dr. Christopher Ng, Veterinary Operations Manager at Zoetis Australia, warns that parasite risk disappearing during winter is a dangerous belief: "Parasites remain a year-round risk, with dogs still exposed through backyards, on their daily walks, interactions with other animals, travel and in their local environment."
“Risk varies depending on factors such as geography, climate and lifestyle, which is why parasite prevention should be based on risk, not the season.”
Myth 2: "Natural Remedies Work Just as Well as Clinical Treatments"
The Fact: According to YouGov data, 11% of Australian dog owners mistakenly believe natural remedies work just as well as clinically proven treatments. However, veterinary clinical trials show that natural alternatives lack the proven efficacy required to protect against life-threatening threats like paralysis ticks or heartworm (for a complete breakdown of clinical protection methods, see our Australian Dog Tick Prevention Guide).
Myth 3: "You Only Need Treatment If Symptoms Are Visible"
The Fact: Approximately 13% of Australian dog owners (around 900,000 people) believe they only need to treat their dog if symptoms are visible. In reality, many parasites can be present and damaging a pet's internal organs long before any obvious physical symptoms appear.
Myth 4: "Dogs on Commercial Diets Aren't at Risk"
The Fact: 10% of owners believe their dog isn't at risk simply because they don’t eat a raw diet. While raw feeding continues to grow in popularity—as explored in our guide to Australia's raw dog food revolution—parasites like fleas, paralysis ticks, and heartworm are contracted through outdoor exposure, soil contact, and mosquito bites, making routine protection essential regardless of what is in your dog's bowl.
Myth 5: "Skipping Prevention Saves Money"
The Fact: Nearly half of Australian dog owners hesitate to treat their pets, citing cost as a major factor. Additionally, 11% fear prevention medication could harm their dog, while another 11% feel confused about which treatment best suits their pet's needs. However, skipping monthly care often backfires financially: Australian pet owners spend an average of $287 each time a pet requires veterinary treatment for an active parasite infestation, with severe cases costing thousands.
Real Experience: The Long-Term Impact of Puppy Parasites
For television presenter, model, and expecting first-time mum Erin Holland, the issue hit close to home when her two-year-old Siberian Husky, Skylar, contracted parasites as a puppy.
"Like many others, Skylar’s routine can change in winter," says Erin. "But after her experience with parasites as a puppy, I’m very conscious of being consistent with her care."
“Parasites affected her digestive health in ways we still manage today. It was confronting to learn that a parasite infestation can have long-term consequences if left untreated.”
As Erin prepares to welcome her first child, keeping Skylar protected with an all-in-one monthly chew (like Simparica Trio) gives her household peace of mind heading into winter.
How to Assess Your Dog's Risk
Because risk factors vary based on geography, local climate, and daily habits, a one-size-fits-all approach doesn't work:
1. Review Seasonal Habits: Check indoor environments and heated areas where fleas and larvae continue to thrive during winter.
2. Consult Your Vet: Discuss your dog's lifestyle to find an all-in-one preventative chew (such as Simparica Trio) or topical treatment suited to their weight and age.
3. Use Online Assessment Tools: Complete an online parasite risk assessment to identify specific exposure levels based on your location and daily walking routes.
Sources & References
- YouGov / Zoetis Australia Survey (2026): Nationally representative consumer research survey of 1,000 Australian dog owners aged 18+ (Weighted by age, gender, and region; conducted March 13–18, 2026).
- PetSure Knowledge Hub (2024): Late summer parasites: What every pet parent should know.
Explore More in Dog Health & Wellness
Keep your canine companion thriving year-round with these expert guides from our wellness library:











