The Animal Hospital

Phone: 9021 6000
After Hours: 0417 910 043
(emergencies only)
Address: 464 Hannan St,
Kalgoorlie, WA 6430



Heartworm is spread by mosquito’s.
An infected mosquito bites the dog, injects the dog with larvae which travel through the muscles and tissues, this takes a few months.

Eventually they enter the blood stream and migrate to the heart and lungs.
Here they grow into adult worms and can be up to 30 centimeters long.
These worms eventually produce offspring called “microfilaria” which is what the mosquito sucks up and starts the cycle again.
The worms inside the heart and lungs cause very serious damage to the dog.
Being so large, they are a major barrier to the free passage of blood from the heart to the lungs.
The infection slowly progresses. In the lungs the worms cause scarring and pneumonia causing the heart to dilate and become weak.
In a dog the disease initially causes a cough. This worsens and the dog becomes inactive and lethargic.
It will be difficult to exercise without coughing and becoming breathless. In advanced cases fluid leaks from the blood vessels and accumulates in the lungs and lower abdomen.
This fluid gives the dogs abdomen a ‘pear-shaped” appearance, resembling the shape of a balloon filled with water.



  • Proheart is a once a year injection
  • Sentinel – monthly chew
  • Interceptor- monthly chew
  • Advocate – monthly spot-on treatment
  • Heartguard chews – monthly chew