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Pet Parasite Control

Protecting your pet from parasites is a year-round responsibility, and our team at Porter Square Veterinarian is here to help. We offer personalized parasite prevention and treatment plans for dogs, cats, and pocket pets throughout Somerville and the surrounding area.

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What Is Pet Parasite Control?

Pet parasite control refers to the prevention, detection, and treatment of internal and external parasites that can affect your pet’s health. Common parasites in the greater Boston area include fleas, ticks, heartworms, roundworms, hookworms, tapeworms, and mites. Left unaddressed, these parasites can cause significant discomfort and, in some cases, serious illness in pets and even humans.

Parasite prevention is most effective when it’s consistent and tailored to your pet’s individual lifestyle and risk factors. A dog who spends time hiking in wooded areas, for example, faces different risks than an indoor cat. Our team takes the time to understand your pet’s daily life before recommending a prevention plan that fits.

A tabby cat with green eyes lies on its back on a green surface

Internal and External Parasites: What to Know

Parasite control generally addresses two categories of parasites: internal and external.

Internal Parasites

Internal parasites, such as heartworms, roundworms, hookworms, and tapeworms, live inside your pet’s body and are often invisible to the naked eye. Heartworm disease in particular can be life-threatening if left untreated, and prevention is far simpler and safer than treatment. Regular laboratory testing and fecal screenings allow our team to detect internal parasites early, even before symptoms appear.

External Parasites

External parasites, such as fleas, ticks, and mites, live on your pet’s skin and coat. While they may seem like a nuisance, external parasites can transmit diseases, trigger allergic reactions, and cause significant skin irritation. Ticks in the Somerville area can carry Lyme disease and other tick-borne illnesses, making reliable tick prevention especially important for pets who spend time outdoors.

Our Approach to Parasite Prevention

At Porter Square Veterinarian, we feature a complete in-house health store carrying a full range of preventative products to protect your pet from both internal and external parasites. Our current inventory includes Heartgard Plus, Sentinel, Nexgard, Nexgard Combo for Cats, Simparica Trio, and Seresto Collars, giving us a variety of options to find the right fit for your pet.

We discuss parasite prevention at every wellness exam, reviewing your pet’s current protocol and making adjustments based on any changes in their lifestyle or health. If your pet has never been on a preventative or has lapsed in their coverage, we’ll help you get them back on track safely and effectively.

For pets who have already encountered parasites, our team provides treatment options tailored to the type of parasite and the severity of the situation, always with your pet’s comfort and safety in mind.

Why Consistent Flea & Heartworm Prevention Matters

Flea and heartworm prevention are two of the most important components of a complete parasite control plan. Fleas reproduce at a rapid rate, and a small problem can become a significant infestation in a short amount of time. Beyond the itching and discomfort they cause, fleas can transmit tapeworms and trigger flea allergy dermatitis, a common and uncomfortable skin condition in dogs and cats.

Heartworm disease is transmitted through mosquito bites and can affect dogs, cats, and ferrets. In dogs, heartworms can grow and multiply inside the heart and lungs, causing serious cardiovascular damage over time. In cats, even a small number of heartworms can cause severe respiratory distress. Consistent year-round prevention is the most reliable way to keep both fleas and heartworms from becoming a problem for your pet, regardless of the season.

A light colored dog with brown patches is scratching its neck with its hind leg

Preventive Care You Can Count On

Parasite prevention is an area where experience and product knowledge make a meaningful difference. Our team stays current on the most effective and safe options available, so we can match each pet with the prevention plan that best suits their needs. We also take the time to explain how each product works and how to administer it correctly at home, because the best prevention plan is one that actually gets used.

If you’ve noticed signs of parasites on your pet, such as excessive scratching, hair loss, or visible fleas or ticks, we encourage you to call us so we can assess the situation and get your pet the care they need.

FAQs About Pet Parasite Control

Does my indoor pet need parasite prevention?

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Yes, in most cases. Even pets who spend the majority of their time indoors can be exposed to fleas, mosquitoes, and other parasites through open windows, contact with other animals, or brief trips outside. We recommend discussing your pet's specific lifestyle with our team to determine the right level of prevention.

How do I know if my pet has worms?

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Signs of intestinal parasites can include weight loss, changes in appetite, a bloated abdomen, diarrhea, or visible worms or segments in the stool. However, many pets show no obvious symptoms at all, which is why routine fecal screenings are an important part of preventive care.

How often should my pet be tested for heartworms?

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Most dogs should be tested for heartworms annually, even if they are on a consistent preventative. Testing helps confirm that the prevention is working and catches any early infections as quickly as possible. Our team can advise on the appropriate testing frequency for your individual pet.

What should I do if I find a tick on my pet?

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You can remove a tick at home using a tick remover tool or fine-tipped tweezers, taking care to remove the entire tick without crushing it. After removal, make sure your pet is current on monthly preventatives. A heartworm and tick test is typically recommended 4 to 6 weeks after a tick bite, or sooner if your pet develops symptoms such as lethargy, limb weakness, or loss of appetite.

Can I use over-the-counter flea products instead?

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Over-the-counter flea products vary widely in effectiveness and safety. Some can cause adverse reactions, particularly in cats. We recommend speaking with our team before starting any new parasite prevention product to make sure it's appropriate for your pet's species, weight, and health status.

A Foundation for Long-Term Pet Health

Parasite control is one of the quieter but most essential components of keeping your pet healthy over the long term. At Porter Square Veterinarian, we work with pet owners throughout the Somerville community to build prevention plans that are practical, effective, and tailored to each individual animal—because protecting your pet from parasites is protection that should never lapse.