Veterinarians in Nova Scotia are warning pet owners about a sharp rise in tick-borne diseases among dogs, with cases of Lyme disease and anaplasmosis becoming more common across the province. The increase is attributed to milder winters and longer tick seasons, allowing ticks to thrive and expand their range.
Vets see more cases than ever before
Registered veterinary technician Avary Miller, who works at Cobequid Animal Hospital in Lower Sackville, N.S., said the clinic has been diagnosing tick-borne illnesses in dogs at an unprecedented rate this year. “We are seeing a lot more cases of Lyme disease and anaplasmosis compared to previous years,” Miller said. “It’s becoming a regular part of our day-to-day work.”
Veterinary assistant Nikita Chiasson echoed those concerns, noting that many dog owners are unaware of the risks. “A lot of people don’t realize that ticks are active even in the fall and early spring now,” Chiasson said. “We’re seeing dogs that have never had tick issues before coming in with symptoms.”
Warmer weather extends tick season
The increase in tick-borne diseases is linked to changing climate patterns. Warmer temperatures in Nova Scotia have extended the period when ticks are active, from early spring through late fall. According to the Canadian Veterinary Medical Association, the black-legged tick, which carries Lyme disease, has expanded its habitat northward in recent years.
Dr. Michael Blouin, a veterinarian at the Atlantic Veterinary College in Charlottetown, said the trend is consistent across Atlantic Canada. “We are definitely seeing a higher incidence of tick-borne diseases in dogs,” Blouin said. “Pet owners need to be vigilant year-round, not just in the summer.”
Symptoms and prevention
Symptoms of tick-borne diseases in dogs include fever, lethargy, lameness, and loss of appetite. If left untreated, these illnesses can lead to kidney damage or other serious health issues. Miller advises pet owners to check their dogs for ticks after walks and to use veterinarian-recommended preventatives.
“Prevention is key,” Miller said. “There are many effective tick control products available, from topical treatments to oral medications. It’s important to talk to your vet about what’s best for your dog.”
Chiasson added that early detection is crucial. “If your dog is acting off or has a fever, get them checked out. The earlier we catch it, the better the outcome.”
Public health concern
The rise in tick-borne diseases in dogs also raises concerns for human health, as ticks can transmit illnesses like Lyme disease to people. Public Health Nova Scotia has reported an increase in human cases in recent years, with 2025 seeing the highest number on record.
“Ticks don’t discriminate between dogs and humans,” said Dr. Robert Strang, Nova Scotia’s chief medical officer of health. “Protecting your pets also helps protect your family, because it reduces the tick population around your home.”
Health officials recommend keeping grass short, removing leaf litter, and using tick repellents when spending time outdoors. Pet owners are also advised to consult their veterinarian about vaccination against Lyme disease, which is available for dogs in high-risk areas.
