Welcome to
The Ontario Animal Health Network
OAHN seeks to form a line of communication with as many veterinarians across Ontario as possible, both to collect information about diseases seen in practice and to share pertinent health and disease information.
We’re dedicated to early detection and response to emerging infectious disease in our province’s animal populations.
What’s Happening
Featured Resources
18 Feb , 2026
Anti-Parasitics Table for Cats and Dogs 2026
A table breaking down the different anti-parasitics for dogs and cats, outlining what species they are used for and what type of parasite they treat. The OAHN Companion Animal Network has created a simplified table for pet owners, and a veterinary version.
13 Feb , 2026
Webinar: Tackling CAEV Webinar by Dr. Fauna Smith (UC Davis) and Dr. Davor Ojkic (AHL).
Gain a deeper understanding of CAEV to facilitate control programs and testing within your clients’ herds. Learn about the pathogenesis of the disease, risk factors for transmission, diagnostic testing methodologies and options in Ontario, and eradication/ control decisions.
Data Contributors
The Animal Health Laboratory, University of Guelph, Gallant Custom Laboratories Inc., IDEXX Laboratories Inc., and OMAFRA all contribute data on top pathogens and diseases for network review. This laboratory data analysis is an essential component of the disease surveillance process. The OAHN expert networks compile and interpret these data and report trends or changes of note back to veterinarians, producers and animal owners in a variety of media formats.
Continuing Education through Social Media
We are constantly posting interesting and informative veterinary articles on our social media accounts. These help veterinarians, producers, owners and the public to understand what is happening in the broader veterinary world without spending a lot of time searching.