The Silent Killer: A Comprehensive Guide to Heartworm Disease in Dogs
Introduction It is an extremely dangerous disease which is caused by a parasite worm known as Dirofilaria immitis . These worms inhabit the heart, lungs, and blood vessels of the infected animals and cause a lot of harm and destruction to their lungs, heart, and other body organs. How the Disease Is Spread As was mentioned above, mosquitoes play a key role in the spread of this parasite. When they bite an infected pet, they get young worms ( microfilariae ). They become mature after 10 to 14 days and then they will infect another animal (a dog in this case). As a result, these worms enter the bloodstream and travel to the heart and lungs, developing into adults (which may be up to 12 inches long). Stages and Symptoms This disease is known for its silent progress. However, as soon as the number of worms grows, it becomes apparent. Stage 1: There are no symptoms or only a minor cough; Stage 2: Persistent coughing and unwillingness to exercise; Stage 3: Poor condi...