Rowan Sanderson sits down with Dr. Anna Hielm-Björkman, leader of the DogRisk research group, and the head of raw research at Helsinki University. Dr. Anna discusses her recently-released paper disproving the link between people getting ill and feeding pets raw food, which was written with the help of 17,000 respondents from 81 countries. The questionnaire was targeted to pet owners who, to some extent, fed raw to either cats or dogs.