Routine preventive care is the most reliable way to keep pets healthy and to catch problems early, when they are typically easier to manage. For Canadian pet owners, the specifics of that routine are shaped by the local climate, available veterinary resources, and provincial regulations that differ from those in other countries.
Establishing a veterinary relationship
The starting point for pet health maintenance is identifying a veterinarian before a health problem arises. In Canada, licensed veterinarians are regulated by provincial veterinary medical associations — for example, the College of Veterinarians of Ontario in Ontario, or the College of Veterinarians of British Columbia. These bodies maintain public directories of licensed practitioners.
An initial wellness visit — typically within the first week of acquiring a new pet — establishes a baseline health record, confirms or initiates a vaccination schedule, and gives the veterinarian an opportunity to identify any existing conditions. For adult animals adopted from shelters, this baseline visit is particularly important because health history may be incomplete.
Vaccination
Vaccination protocols for dogs and cats in Canada follow schedules recommended by the Canadian Veterinary Medical Association and the American Animal Hospital Association (AAHA). Core vaccines — those recommended for virtually all dogs or cats regardless of lifestyle — are distinguished from non-core vaccines that are recommended based on risk factors.
Core vaccines for dogs
- Distemper, parvovirus, and adenovirus (typically combined as DA2PP or similar)
- Rabies — required by law in most Canadian provinces
Core vaccines for cats
- Feline panleukopenia, herpesvirus, and calicivirus (FVRCP)
- Rabies — legally required in many provinces for cats as well as dogs
Non-core vaccines, such as those for Bordetella (kennel cough), Leptospirosis, or feline leukaemia virus (FeLV), are recommended based on individual risk profile — whether a dog attends boarding facilities or a cat has outdoor access, for instance. A veterinarian familiar with the specific animal and its lifestyle is best placed to recommend these.
Rabies requirements in Canada
Rabies vaccination is legally required for dogs in Ontario, Quebec, Manitoba, and several other provinces. Requirements vary, but given that rabies is present in Canadian wildlife — including bats, foxes, and skunks — the vaccine is considered best practice across the country regardless of local law.
Parasite prevention
Canada's climate affects the seasonal activity of external and internal parasites, but it does not eliminate the risk entirely.
Fleas and ticks
Ticks capable of transmitting Lyme disease — primarily the blacklegged tick (Ixodes scapularis) in eastern Canada — are present across a growing range that now includes southern Ontario, Quebec, New Brunswick, and Nova Scotia. The range is expanding northward over time. Year-round tick prevention is recommended in affected regions, and checking for ticks after outdoor activities in wooded or grassy areas is standard practice.
Fleas are active whenever temperatures are above freezing and can persist indoors year-round. In most of Canada, flea season runs roughly from May through November outdoors, but indoor infestations can continue through winter if not addressed.
Heartworm
Heartworm disease, transmitted by mosquitoes, is present in parts of Canada. The risk is highest in southern Ontario and Quebec. The CVMA recommends testing dogs annually and using preventive medication in areas where mosquito season extends long enough to sustain transmission. Cats can also contract heartworm, though the presentation differs from that in dogs.
Dental health
Dental disease is among the most common health conditions in adult dogs and cats in Canada. Without regular dental care, tartar accumulates, leading to gingivitis and eventually periodontitis. Advanced dental disease causes persistent pain and can affect the kidneys and heart if bacteria from infected gum tissue enters the bloodstream.
Preventive dental care at home includes:
- Tooth brushing: Daily brushing with veterinary toothpaste is the most effective home method. Human toothpaste should not be used — it contains ingredients that are not safe for animals to swallow.
- Dental chews and diets: Products carrying the Veterinary Oral Health Council (VOHC) seal have been evaluated for efficacy and are a useful supplement to brushing.
- Professional cleanings: Veterinary dental cleanings under general anaesthesia allow full examination and scaling of all tooth surfaces. The frequency depends on the individual animal's dental condition.
Seasonal health considerations in Canada
Canadian pet owners deal with health considerations that vary significantly by season and region.
Winter
Cold weather affects pets differently based on coat type, body size, and breed. Short-coated or small breeds may require jackets for outdoor excursions in temperatures below -10°C. Salt and ice-melting chemicals on walking surfaces cause paw pad irritation and should be rinsed off after walks. Antifreeze, which contains ethylene glycol, is toxic to both dogs and cats and has a sweet taste that makes it attractive to animals — spills should be cleaned up immediately.
Spring and summer
The return of warm weather reactivates tick and flea populations. Heatstroke is a risk for dogs left in parked vehicles or exercised heavily in high temperatures; brachycephalic breeds (flat-faced dogs such as Bulldogs and Pugs) are particularly susceptible. Water access during outdoor activity is essential.
Autumn
Seasonal mushroom growth in many parts of Canada poses a toxicity risk to dogs that ingest them during outdoor walks. If a dog has eaten an unknown mushroom, veterinary consultation is warranted rather than waiting for symptoms.
Weight management
Excess body weight is associated with a range of health conditions in both dogs and cats, including joint problems, diabetes in cats, and reduced lifespan. Assessing a pet's body condition score — a standardised visual and tactile assessment — is something veterinarians routinely do at wellness visits and something owners can learn to do at home. The WSAVA body condition scoring charts for dogs and cats are publicly available.
Weight is easier to manage before a problem is established. A veterinarian's dietary recommendation for a specific animal will be more accurate than general guidance, because caloric needs vary considerably based on age, activity level, reproductive status, and breed.
Recognising signs that warrant veterinary attention
Between wellness visits, owners are the first to notice changes that may indicate a health problem. Signs that generally warrant prompt veterinary attention include:
- Vomiting or diarrhoea persisting more than 24 hours, or containing blood
- Sudden changes in appetite or water consumption
- Difficulty breathing
- Straining to urinate — particularly in male cats, which can indicate a urinary blockage requiring emergency treatment
- Sudden changes in behaviour, especially in older animals
- Lameness that persists after rest
- Lumps or swellings that appear or change