Quick Reference: Ticks and Pathogens

Below is a quick reference guide to ticks most commonly found on companion animals and the pathogens which they can transmit.


**It's important to note that pathogen infection prevalence of ticks can vary significantly by geographic area, so the information provided below does not imply that those pathogen are present in all areas with those tick populations. 


Greene, C. Infectious Diseases of the Dog and Cat, 4th edition. (Saunders, 2011).

Lindquist, E. E. et al. A Handbook to the Ticks (Ixodida: Ixodidae, Argasidae) of Canada. (Biological Survey of Canada, 2016).


Little, S. E. Ehrlichiosis and Anaplasmosis in Dogs and Cats. Vet. Clin. NA Small Anim. Pract. 40, 1121–1140 (2010).

Nelder, M. P. et al. Human pathogens associated with the blacklegged tick Ixodes scapularis: a systematic review. Parasit. Vectors 9, 265 (2016).

Merck Veterinary Manual. (Merck and Co., 2018).


In 2016, Dr. Scott Weese of the Ontario Veterinary College launched the Pet Tick Tracker to help monitor changes in tick populations. Through this online tool, pet owners could submit reports of tick findings - and the response was overwhelming! He's now teamed up with Drs. Katie Clow and Michelle Evason to create Pets and Ticks - a comprehensive website that brings the Pet Tick Tracker together with up-to-date, evidence-based information on ticks in Canada.  


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E: petsandticks@gmail.com

© 2018 by JS Weese & KM Clow.
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