The Danger of Heartworm and the Importance of Heartworm Treatment at Fremont Pet Hospital, Your Veterinarian Near You

Heartworm is one of those quiet threats that doesn’t make much noise until it’s already doing harm. At Fremont Pet Hospital, your veterinarian in Fremont, CA, we treat heartworm as a serious condition, not just for dogs but for cats too. It’s a disease that starts small and grows out of sight—like a weed taking root under a porch. This article will explain what heartworm is, how it spreads, what signs to look for, and how you can prevent it.

What Heartworm Is

Heartworm is a parasite. It’s spread by mosquitoes that carry tiny larvae. When a mosquito bites a pet, it can drop those larvae into the bloodstream. Over several months, those larvae grow into long worms that live in the heart and lungs. That’s where the real trouble starts.

Dogs are the usual target, but cats can be affected too. In cats, the worms don’t grow as big or live as long, but they can still cause lasting damage to the lungs and immune system and it often ends up being fatal.

Symptoms to Watch for

In dogs, early symptoms are usually mild. You might notice a soft cough or tiredness after exercise. As the worms grow, symptoms get worse—difficulty breathing, fatigue, weight loss, and even heart failure can happen if the infection is advanced.

Cats are harder to read. Their symptoms might look like asthma or allergies: coughing, gagging, or vomiting. Some cats show no signs at all until the damage is done. Others may suddenly collapse without warning.

Diagnosis and Treatment

A simple blood test can show if a dog has heartworms. Treatment in dogs involves killing the worms with a series of injections, plus strict rest for several months. It’s not easy on the pet or the owner.

In cats, there is no approved drug to kill adult heartworms. We treat the symptoms and support the cat’s breathing and immune system but there is practically no hope for a successful recovery. That’s why prevention matters even more.

Prevention Is the Best Medicine

Prevention is straightforward and reliable. There are chewables, topical treatments, and even injections that keep heartworms from developing in the first place. These medicines kill the larvae before they grow into adults. Most of them also protect against other parasites like fleas and intestinal worms.

It’s best to give preventive medicine year-round, especially in areas with mosquitoes. Skipping a few months can leave a pet vulnerable.

Visit Us for Heartworm Treatment from a Veterinarian Near You

Heartworm is a preventable disease, but once it’s taken hold, it’s hard to treat. At Fremont Pet Hospital, your veterinarian in Fremont, CA, we encourage all pet owners to keep prevention a regular part of their routine.

If you have questions or want to start your pet on prevention, give us a call. We’re always here to help your pets stay safe and healthy. Call us at (510) 651-3960 for heartworm treatment from a veterinarian near you.