Have you ever found a tick on your dog after a walk and wondered how concerned you should be? At Markham Vet Clinic, your Unionville, ON veterinary clinic, questions about Ontario tick season are becoming increasingly common. Ticks are active across many parts of the province and can affect dogs, cats, and even people. Understanding when ticks are most active and how to reduce your furry friend’s exposure can help keep your companion healthier year-round.

While many pet owners associate ticks with summer, Ontario tick season often begins earlier and lasts longer than expected. Warmer temperatures have contributed to the expansion of tick populations in many regions, increasing the importance of tick prevention for dogs and cats, as well as overall awareness of Lyme disease in pets. Learning more about protecting pets from ticks can help you enjoy outdoor adventures with greater confidence.

What Are Ticks?

Ticks are small external parasites that survive by feeding on the blood of animals and people. Unlike fleas, ticks do not jump or fly. Instead, they wait on vegetation and attach themselves when a suitable host passes nearby.

Ticks can be found in a variety of environments, including:

• Wooded areas
• Tall grass
• Hiking trails
• Parks
• Fields
• Shrubs and brush

Even well-maintained neighbourhoods can contain ticks, especially near natural areas where wildlife is present.

Once attached, a tick may remain on a host for several days while feeding.

Understanding Ontario Tick Season

Many people assume ticks disappear during cooler months, but that is not always the case.

Ontario tick season generally begins when temperatures consistently rise above freezing. In some years, ticks may become active during late winter or early spring and remain active well into the fall.

Ticks become less active during extremely cold weather, but they do not necessarily disappear entirely. During milder winters, ticks may remain active whenever temperatures temporarily rise.

This extended activity period means pets may need protection for a larger portion of the year than many owners realize.

Why Tick Populations Are Increasing

Over the past several years, tick populations have expanded across many regions of Ontario.

Several factors may contribute to this trend, including:

• Changing climate conditions
• Expanding wildlife populations
• Increased movement of migratory birds
• Growth of suitable tick habitats

As ticks spread into new areas, pets may encounter them in locations where they were once uncommon.

Even urban and suburban communities can have tick activity, making awareness important for pet owners throughout the province.

How Pets Encounter Ticks

Ticks do not actively chase animals. Instead, they use a behaviour known as questing.

During questing, ticks climb onto vegetation and wait with their front legs extended. When an animal brushes past, the tick grabs onto the fur and begins searching for a place to attach.

Dogs are particularly susceptible because they frequently explore grassy and wooded areas.

Cats that spend time outdoors can also encounter ticks during normal daily activities.

Because ticks are small, many pets carry them home unnoticed.

Where Ticks Commonly Attach

Ticks often seek areas with thinner skin and reduced grooming activity.

Common attachment sites include:

• Around the ears
• Under collars
• Between the toes
• Around the eyes
• Under the front legs
• In the groin area
• Around the neck

Performing routine tick checks after outdoor activities can help identify attached ticks before they remain in place for extended periods.

Why Ticks Are a Concern

The primary concern surrounding ticks is their ability to transmit disease.

Not every tick carries disease, and not every tick bite results in illness. However, some ticks can transmit pathogens that may affect both animals and people.

This is why protecting pets from ticks remains an important part of preventive veterinary care.

Early detection and prevention are often the most effective strategies.

Lyme Disease in Pets

One of the most well-known tick-borne illnesses in pets is Lyme disease.

Lyme disease is caused by bacteria transmitted through the bite of infected blacklegged ticks, sometimes referred to as deer ticks.

Although many infected pets never develop symptoms, some may experience health concerns that require veterinary attention.

Common signs may include:

• Lameness
• Joint pain
• Reduced activity
• Fever
• Decreased appetite
• General discomfort

Symptoms can appear weeks or even months after exposure, making diagnosis challenging in some cases.

Other Tick-Borne Diseases

Although Lyme disease receives considerable attention, ticks may also carry other organisms that can cause illness.

Different tick species can transmit different diseases. The risk varies depending on geographic location and the specific tick involved.

Veterinary professionals consider a pet’s travel history, exposure risk, clinical signs, and local disease patterns when evaluating potential tick-borne illnesses.

This is one reason routine veterinary examinations remain valuable, especially for pets that spend significant time outdoors.

Tick Prevention for Dogs

Effective tick prevention for dogs begins with understanding your dog’s lifestyle and level of exposure.

Dogs that frequently visit parks, hiking trails, cottages, campgrounds, or wooded areas generally face greater tick exposure than dogs that spend most of their time indoors.

Several strategies may help reduce risk.

Perform Regular Tick Checks

Checking your dog after outdoor activities can help identify ticks before they become fully attached.

Run your hands through your dog’s coat and examine common attachment areas carefully.

Long-haired dogs may require extra attention because ticks can hide beneath thick fur.

Maintain Grooming Routines

Regular grooming makes it easier to detect abnormalities on the skin and coat.

Brushing can help you identify ticks, skin irritation, or other concerns before they become more significant.

Professional grooming services may also help owners spot potential issues earlier.

Discuss Preventive Options With Your Veterinarian

Veterinary-recommended parasite prevention products play an important role in tick prevention for dogs.

Different products work in different ways, and your veterinarian can help determine which approach is most appropriate based on your dog’s needs and risk factors.

Tick Prevention for Cats

Some cat owners assume ticks are primarily a canine problem. In reality, outdoor cats can also encounter ticks.

Tick prevention for cats becomes particularly important for felines that spend time outdoors or live in areas with significant tick activity.

Cats may encounter ticks while:

• Exploring gardens
• Hunting small prey
• Resting in tall grass
• Wandering near wooded areas

Routine examinations and discussions with your veterinarian can help identify appropriate prevention strategies.

Indoor Cats Still Need Monitoring

Even indoor cats occasionally encounter ticks.

Ticks may enter homes on clothing, footwear, other pets, or wildlife that comes close to the property.

While indoor cats generally face lower risk, routine health checks remain worthwhile.

Protecting Pets From Ticks During Outdoor Activities

Outdoor adventures are an important part of many pets’ lives.

Fortunately, protecting pets from ticks does not mean avoiding outdoor activities altogether.

Several practical steps can help reduce exposure.

Stay on Maintained Trails

When hiking, remaining on established paths may reduce contact with vegetation where ticks commonly wait.

Allowing dogs to roam through dense brush or tall grass may increase exposure opportunities.

Inspect Pets After Every Adventure

A quick examination after walks, hikes, or outdoor play sessions can become an effective habit.

The sooner a tick is identified, the easier it is to remove.

Regular inspections also help you become familiar with your pet’s normal skin and coat condition.

Monitor for Changes

Not every tick bite causes disease. However, unusual symptoms following known tick exposure should be discussed with a veterinarian.

Changes in mobility, appetite, energy level, or behaviour may warrant further evaluation.

What Should You Do If You Find a Tick?

Finding a tick can be alarming, but remaining calm is important.

Prompt removal is generally recommended.

Using fine-tipped tweezers, grasp the tick as close to the skin as possible and pull steadily upward. Avoid twisting or crushing the tick during removal.

After removal, monitor the area and watch for any changes in your pet’s health.

If you are unsure about tick removal or have concerns about exposure to disease, contact your veterinarian for guidance.

The CDC has a piece about ticks on dogs. WebMD also has some helpful facts about the dangers posed by fleas and ticks. 

Frequently Asked Questions

When is Ontario tick season?

Ontario tick season often begins when temperatures consistently rise above freezing and may continue through much of the spring, summer, and fall. During milder winters, some ticks may remain active whenever temperatures temporarily increase.

Because tick activity can vary based on weather conditions and location, year-round awareness is helpful. Your veterinarian can provide recommendations based on your pet’s lifestyle and local risk factors.

Can cats get tick-borne diseases?

Yes, cats can be bitten by ticks and may develop tick-related health concerns. Although some tick-borne illnesses are more commonly discussed in dogs, tick prevention for cats remains an important part of preventive care.

Outdoor cats generally face a higher risk of exposure, but indoor cats can occasionally encounter ticks as well. Routine examinations and preventive discussions with your veterinarian can help reduce risk.

What are the signs of Lyme disease in pets?

Lyme disease in pets may cause symptoms such as lameness, joint discomfort, fever, reduced appetite, and decreased activity. Some infected pets never develop obvious symptoms.

Because signs may appear weeks or months after exposure, diagnosis can sometimes be challenging. Veterinary evaluation is recommended if you notice unusual changes following known tick exposure.

What is the best way to protect my pet from ticks?

The most effective approach to protecting pets from ticks typically combines routine tick checks, environmental awareness, and veterinary-recommended prevention strategies.

Every pet’s lifestyle is different. Your veterinarian can help determine the most appropriate prevention plan based on your pet’s age, health status, and exposure risk.

Schedule an Appointment at Our Unionville, ON Veterinary Clinic

Understanding Ontario’s tick season is an important step toward keeping your furry friend healthy year-round. Whether you have questions about tick prevention for dogs, tick prevention for cats, or concerns about Lyme disease in pets, the team at Markham Vet Clinic is here to help. If you have been searching online for a trusted vet near Unionville, ON, contact our veterinary clinic today to schedule an appointment and discuss the best tick-prevention plan for your companion.

This blog is intended for informational purposes only. Always consult your veterinarian for advice, diagnosis, and treatment recommendations for your pet and follow their professional guidance regarding your companion’s health.

Do you want to learn more about our Unionville, ON animal clinic?  Our Service page is a great place to start. You’ll find an overview of the various services we offer. These include veterinary care basics like Wellness and Vaccinations, Allergies and Dermatology, and Nutrition and Weight Management, as well as more specialized services.