As the weather (slowly and inconsistently) gets nicer here in Ontario, dogs start to go swimming more. My dog, Ozzie (pictured below), is an embarrassment to the Labrador breed as he will not swim, but he’ll happily wade through water, as long as his feet don’t leave the ground (but he still manages to get
Ultrasonic Tick Repellants: Drug-Free Protection Or Opportunistic Profiteering?

In areas where ticks and fleas are a concern (which is much of the world), dogs (and to a lesser degree cats) may receive regular tick prevention medications. Some people would rather not use them, whether it’s because of cost, concern about adverse effects, a desire to use more “natural” products or internet misinformation. This…
Plague, Cats and Travel Histories
A couple of months BC (before COVID-19), I was planning a live simulation exercise for our hospital. The goal was to see how well we could identify and handle a nasty, reportable zoonotic disease, and to look at our personal protective equipment training and needs (COVID-19 helped with that last one, at least).
Here’s the…
Canine and feline antiparasitics
Negotiating the world of antiparasitics for dogs and cats can be daunting. With the wide range of products, similarly named products with different ingredients and differently named products with the same ingredients, it’s hard to keep up.
The Ontario Animal Health Network as put together some useful tables that outline antiparasitic products available in Canada…
Plague from dog
Plague… it’s a term that typically conjures up images of the devastating "Black Death", the pandemic that killed 75-200 million people in Europe back in the 14th century. Yet, it’s not just a historical disease. Plague is still present in a variety of small mammals in different regions worldwide (see map), including parts…
Flea collar withdrawal in France
A group of flea (or flea and tick) collars have been removed from the market in France following a risk assessment. The review looked at these widely available, over-the-counter products that contain a variety of different chemicals. The determination was that the risks posed by contact with the collars (particularly to children) were unacceptable compared…
Plague in New Mexico cat and dog
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Plague in Oregon
The CDC’s Morbidity and Mortality Weekly Reports has a short report about two plague cases in the US. Plague, while often thought of as a historical disease (the Black Death), is alive and well in wild rodents in some areas of the world, including parts of North America, and human cases continue to…
Canadian parasite treatment guidelines for pets
Canadian Guidelines for the Treatment of Parasites in Dogs and Cats have recently been released. These guidelines were developed by an expert panel, consisting of six Canadian veterinary parasitologists and two private practitioners. They provide a good, balanced approach to the treatment of parasites, with an emphasis on the risks present in different…
Cat Scratch Disease – Bartonella henselae
Bartonella henselae is a small, Gram-negative bacterium that is host-adapted to cats. It may rarely cause mild illness in cats, but most felines, from tiny house cats to the king of the beasts, carry the bacteria with no clinical signs whatsoever. Unfortunately, when B. henselae infects a person it can cause any of several serious…