I'm not sure which of the issues below make the feed toxic and am too lazy to go look it up again. Here's one quote that addresses the differences...
"By definition, if a seed is labeled “canola” it has to have less than 30 micromoles of glucosinolates and less than 2% of erucic acid. "
"By definition, if a seed is labeled “canola” it has to have less than 30 micromoles of glucosinolates and less than 2% of erucic acid. "