A study conducted by researchers at the Ontario Veterinary College of the University of Guelph revealed that cases of cannabis intoxication among pets are increasing at an alarming rate in the United States and Canada.
The study reports that the number of reported cases related to cannabis “induced toxicosis” in dogs, cats and other companion animals has increased significantly after the legalization of cannabis in Canada in October 2018.
“Until now the situation has begun to be understood,” said the researchers. While cannabis poisoning in pets appears to be on the rise, “we can’t be sure if this is a real increase or if it has simply resulted in more reports, as it is no longer illegal.”
The causes and symptoms of cannabis intoxication in pets
Marijuana intoxication in pets occurs mainly when animals ingest edible cannabis-based products or dried cannabis plants in the absence of their owners.
In addition, the inhalation of smoke from burning marijuana can also cause cannabis intoxication in pets.
Symptoms begin to appear between 30 Y 60 minutes after ingestion and between 6 and 12 minutes after inhalation . 
The affected pet may experience dribbling of urine, ataxia (body movements abnormalities and lack of coordination), dilated pupils, glassy eyes, disorientation, urinary incontinence, and hyperesthesia (increased sensory activity).
For this study, they collected survey data from 251 veterinarians in the United States and Canada, which incorporate information from numerous participants who have encountered cases of cannabis intoxication in pets.
Cannabis intoxication can be a serious problem for pets. A previously published study found that cannabis intoxication in pets could also induce seizures, fluctuating and abnormal heart rhythms, body vibrations, and in severe cases, even coma.
Analysis of the recent survey indicates that, although almost all animals treated with outpatient follow-up fully recovered, cannabis intoxication has caused the death of some pets in some cases.
According to the study, awareness should be the first step when it comes to preventing marijuana poisoning among pets. If users are aware of the consequences their pets may face when subjected to marijuana, they are likely to take the necessary precautions and measures.
It is important not to leave cannabis where pets can reach it.