Parasite Prevention and Dewormingfor Dogs and Cats
Fleas, ticks, heartworm, and intestinal worms are easy to prevent and miserable to treat once they take hold. At TVS Animal Hospitals, we build a simple, year-round parasite prevention plan for your dog or cat, covering flea and tick control, heartworm protection, and deworming, matched to your pet’s age, lifestyle, and risk here in Toronto. Honest advice, no guesswork, and two clinics open 7 days a week.
Flea and tick control
Heartworm prevention
Deworming for puppies, kittens, and adults
Simple year-round plans
The parasites that affect Toronto dogs and cats
Knowing what you’re protecting against makes prevention make sense. These are the ones we see most:
- Fleas: tiny biting insects that cause itching, allergic skin reactions, and can pass on tapeworms. An indoor infestation is far harder to clear than to prevent.
- Ticks: increasingly common across the Toronto area, and they transmit serious illnesses like Lyme disease, which is why year-round tick prevention matters even in cooler months.
- Heartworm: spread by a single mosquito bite, these worms grow in a dog’s heart and lungs and reach full adult size in about six months. Prevention is simple, safe, and far easier than the treatment.
- Intestinal worms: roundworms, hookworms, tapeworms, whipworms, and threadworms, along with protozoa like coccidia and giardia. Many are controlled by routine deworming, and some can spread to people.
Signs your pet may have parasites
Sometimes you’ll spot them, often you won’t. With fleas, ticks, and other external parasites, watch for scratching, flea dirt in the coat, red or irritated skin, restlessness, or patches of hair loss, and sometimes the parasites themselves. Intestinal worms tend to show up as vomiting or diarrhea, weight loss, a bloated belly, a dull coat, blood in the stool, coughing, or low energy. Heartworm often shows nothing at all until it’s advanced, which is exactly why year-round prevention beats waiting for symptoms. If you notice any of these, give us a call.
Deworming schedules for puppies and kittens
Puppies and kittens are commonly born with or quickly pick up intestinal worms, so deworming starts young and early.
- Puppies: we usually start deworming by 8 weeks, then keep your pup on year-round parasite prevention for life.
- Kittens: we start a little earlier, around 4 weeks, with deworming every month until about six months of age, then ongoing protection suited to your cat.
It’s a quick part of an early-life visit, and we’ll map the whole schedule with you so nothing gets missed.
Year-round protection for adult dogs and cats
Parasites aren’t only a summer problem. Fleas survive happily in heated homes through winter, ticks are active any time it’s above freezing, and heartworm prevention works by clearing infection over the preceding weeks, so consistency matters. For most adult dogs and cats we recommend year-round protection, with the exact products matched to your pet’s weight, species, and lifestyle. Indoor cats need it too, because fleas, and the occasional mosquito, find their way inside. We’ll recommend only what your pet genuinely needs, and show you how to give it.
Why choose TVS for your pet’s Flea, Tick, Heartworm & Deworming
- Complete protection in one plan: flea, tick, heartworm, and deworming
- Plans matched to your pet’s age, weight, species, and lifestyle
- Vet-recommended products that are safe and actually work, not guesswork from a shop shelf
- Deworming for puppies and kittens, and year-round cover for adults
- Education-first: we explain the real risks and skip what your pet doesn’t need
- Often combined with a wellness exam or vaccines to save you a trip
- Transparent pricing, quoted upfront
- Open 7 days a week at two Toronto pet clinics
Common questions about
Flea, Tick, Heartworm & Deworming
Owners trust us with the animals they love, and we don’t take that lightly.
Early. We usually begin deworming puppies by about 8 weeks and keep them on parasite prevention for life. Kittens start a little sooner, around 4 weeks, dewormed monthly until roughly six months, then continue on protection suited to their lifestyle. We’ll set the full schedule with you at an early-life visit.
Deworming is simple: a vet-recommended dewormer, given as a tablet or liquid, with the product and dosing matched to your pet’s age and weight, and sometimes repeated to catch the worm life cycle. We’ll confirm which worms we’re treating, often with a quick fecal test, and tell you exactly how and when to give it. Over-the-counter dewormers don’t cover every parasite, so it’s worth getting the right one.
For most pets in the Toronto area, yes. Fleas live through winter in heated homes, ticks are active whenever it’s above freezing, and heartworm prevention works retroactively, so gaps leave a window open. Year-round protection is the simplest way to stay ahead of all three. We’ll tailor the plan to your pet.
Usually yes. Fleas hitch a ride indoors on clothing or other pets, mosquitoes that carry heartworm get inside, and some intestinal worms spread easily. Indoor cats are typically lower risk, so we’ll right-size the plan, but no risk isn’t the same as no protection.
The vet-recommended ones are very safe when matched to your pet’s species and weight and given correctly. The biggest risks come from guessing: using a dog product on a cat, for example, can be dangerous. That’s why we recommend specific products for your pet and show you how to use them.
Available at both clinics
Urgent visits can be booked at either location, by phone or online. Our North York pet clinic stays open the latest, as late as 11pm.
Toronto North Animal Hospital (North York)
Your North York vet, serving Willowdale, Lansing, Bayview Village, and the Yonge and Sheppard area.
Parliament Animal Hospital (Cabbagetown)
Your Cabbagetown vet, serving Riverdale, Regent Park, Corktown, and St. James Town.
