'She was wobbling, her feet were going out from under her, she lost all bladder control,' Krysta Wilson said, after her small dog suffered marijuana poisoning after picking up a joint butt on a walk.

The University of Guelph said it's one of Canada's first studies of the potential use of cannabis for treating animal cancer.

Parliament Hill is going to the dogs Wednesday as veterinarians lobby MPs to authorize the use of medical cannabis for critters.