Yes, heartworms can be fatal to dogs if left untreated. Heartworms are parasitic worms (Dirofilaria immitis) that live in the heart and blood vessels of infected dogs. The adult worms can grow up to a foot long and can cause serious damage to the heart, lungs, and blood vessels. As the infection progresses, it can lead to severe health issues, including heart failure, lung disease, and ultimately death.

Symptoms of heartworm disease may not be evident in the early stages, which is why regular veterinary check-ups and preventive measures are crucial. Common signs to watch for include coughing, fatigue, decreased appetite, weight loss, and swollen abdomen due to fluid accumulation. If you suspect your dog may have heartworms, it is essential to consult a veterinarian for diagnosis and treatment options.

Preventive medications are highly effective and are usually given monthly. These medications can significantly reduce the risk of heartworm infection and protect your dog’s health. Regular testing is also recommended to ensure your dog remains heartworm-free.

In summary, heartworms can indeed be fatal, but with proper prevention and early treatment, the risks can be managed effectively.

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Topics covered in this question:

Dog Health Veterinary Care Heartworms Dog Disease Pet Prevention