A really annoying thing about soy products and things that contain soy in North America is that something like 85 or 90% come from Monsantos Round Up Ready genetically modified soybean. Many people who eat soy mostly do it as a healthy alternative to other products and these are the same people that are perhaps wary of GM foods. Even worse is the fact that if you live in North America, you don't even know because North Americans don't get to know the nature of the foods they eat (we don't want to infringe on the rights of a corporation). Odds are though if it is not specifically stated as not GM then the soy dog you are eating is from Monsanto. This is the soy problem for North Americans.