Heartworms: What Every Pet Owner Should Know

How Does My Pet Get Heartworms?

• Transmission by Mosquitoes: Pets become infected when bitten by a mosquito carrying heartworm larvae. These larvae enter the pet's bloodstream and eventually mature into adult worms.
• Not Contagious Between Pets: Heartworms can't be spread through casual contact, food, or water-only through mosquito bites.
• Dogs at Higher Risk: While cats and ferrets can also get heartworms, dogs are the natural host and are more likely to suffer serious symptoms if untreated.

What Can I Do to Prevent It?

• Monthly Preventatives: The easiest and most effective method is monthly heartworm prevention medication (oral, topical, or injectable).
• Routine Testing: Even if your dog is on prevention, yearly heartworm testing is essential to ensure no breakthrough infections.
• Control Mosquitoes: Reduce your pet's exposure by keeping them indoors during peak mosquito times and eliminating standing water around your home.
• Never Skip Doses: A single missed month can leave your pet vulnerable. Set reminders or use apps to stay on track!

What Are the Signs of Heartworm Disease?

• Coughing
• Fatigue after moderate activity
• Loss of appetite
• Weight loss
• Swollen abdomen (advanced stages)

"Heartworm prevention is simple. Heartworm treatment is hard. Protect your pet."

American Heartworm Society