How Often Should You Worm Your Dog in Melbourne?

Intestinal worms are far more common in Melbourne dogs than most owners realise. Roundworm, hookworm, whipworm, and tapeworm can all infect your dog — often without any obvious symptoms — and some can even be transmitted to humans. A consistent worming routine is one of the simplest and most effective things you can do for your dog's long-term health.

Which Worms Are Common in Melbourne Dogs?

Melbourne's temperate climate and urban environment create ideal conditions for several types of intestinal parasites. The most common worms affecting dogs in our area include:

• Roundworm (Toxocara canis) — extremely common in puppies, often passed from mother to pup before birth. Adult dogs can also be infected through contaminated soil or faeces.
• Hookworm (Ancylostoma caninum) — burrows through skin or is ingested; causes anaemia and weight loss in severe cases. Thrives in warm, moist environments.
• Whipworm (Trichuris vulpis) — lives in the large intestine; causes bloody diarrhoea and weight loss. Eggs are extremely hardy and can survive in soil for years.
• Tapeworm (Dipylidium caninum) — transmitted through fleas; segments visible in faeces or around the tail. Requires both a flea control and worming programme to prevent.
• Heartworm (Dirofilaria immitis) — transmitted by mosquitoes; damages the heart and lungs. Preventable with monthly or annual preventatives, but treatment once infected is complex and costly.

How Often Should You Worm Your Dog?

The recommended frequency depends on your dog's age, lifestyle, and the type of worming product used. As a general guide:

1. 1Puppies (under 12 weeks): Every 2 weeks — puppies are highly susceptible and often born with roundworm
2. 2Puppies (12 weeks to 6 months): Every month
3. 3Adult dogs (6 months+): Every 3 months for intestinal worms
4. 4Heartworm: Monthly preventative (tablet or spot-on) OR annual injection — discuss with your vet which suits your dog's lifestyle

Signs Your Dog May Have Worms

Many dogs with intestinal worms show no obvious symptoms, which is why regular preventative treatment is so important. When symptoms do appear, they can include:

• Visible worm segments in faeces or around the tail (tapeworm)
• Pot-bellied appearance, especially in puppies (roundworm)
• Scooting or rubbing their bottom on the ground
• Weight loss despite a normal or increased appetite
• Diarrhoea, sometimes with blood or mucus
• Dull, dry coat and general lethargy
• Coughing (can indicate larval migration in roundworm or heartworm)

Choosing the Right Worming Product

Not all worming products treat all worm types. Many over-the-counter products only cover two or three species, leaving your dog unprotected against others. Broad-spectrum products that cover roundworm, hookworm, whipworm, and tapeworm are recommended for dogs in Melbourne. For heartworm, a separate monthly preventative or an annual injection is required.

Combination products that cover intestinal worms, heartworm, and fleas in a single monthly dose are available and offer the most convenient protection. We can recommend the right product based on your dog's weight, age, and lifestyle — and ensure the dosing is correct, as underdosing is a common reason worming treatments fail.

A Note on Heartworm in Melbourne

Heartworm is transmitted by mosquitoes and is present throughout Victoria, including Melbourne's south-east. While the risk is lower than in tropical Queensland, it is not zero — and heartworm disease, once established, is serious and expensive to treat. Prevention is simple, affordable, and highly effective. If your dog has never been on heartworm prevention or has had a gap in treatment, a blood test is recommended before starting preventatives.