For female humans, the latest recommendation from the American Dietetic Assn. and Academy of Medicine is to not have more than 2 servings of soy/week. A new study just came out that indicates that a high soy intake increases the chance of estrogen related cancers in women - this includes soy milk for those who use it. As for canines, I would also avoid it - just not for the same reasons.
Riley - 8 yr. old GSD
Schatzie - GSD - at the Bridge
Raven - GSD - at the Bridge
Diablo - WGSD/Arctic wolf/GreatPyr Mix - at the Bridge
If dogs aren't in heaven, why would we want to go there?