4 Paws Veterinary Clinic

(07) 4723 1988




There are 2 main categories of worms that may affect our pet dogs and cats. These are, heartworm and intestinal worms. 

Please see our intestinal worm page for more information on worms.


Heartworm, or Dirofilaria immitis, is a parasite that is spread by mosquitoes, so you pet doesn't even need to come into contact with other pets to become infected! In Townsville there is always mosquitos so protect your pet and have them on heart worm prevention

Heartworm has a complicated life cycle.  Infected dogs have microfilaria, an immature form of heartworm, circulating in their bloodstream.  Microfilariae are sucked up by mosquitoes when feeding on the blood of infected dogs. The immature parasite develops into a heartworm larva inside the mosquito, then a single bite from a carrier mosquito can infect your pet (dog or cat). As the worms mature in the heart they can cause a physical blockage as well as thickening of the heart and associated blood vessels.  In the earlystages of infection there may be no visible signs, however, infection may eventually lead to signs of heart failure (reluctance to exercise, lethargy,coughing) and even death. Heartworm is present throughout most of Australia(except Tasmania and arid areas).

Thankfully, heartworm is very easy to prevent and should form part of your pet health care routine. We have very effective preventative treatment options available including tablets, chews, spot-on's and even an annual injection for dogs administered by one of our vets. Heartworm prevention should be started when your dog is a puppy. If your pet has not been on heartworm prevention we strongly recommend a heartworm test prior to starting a prevention program.

Please call 4 Paws Veterinarians to book your heartworm test and to start your yearly heartworm injection. 




Our clinic will look after your cat