I think you missed the point of my post. I am not doubting that people have allergic reactions, nor am I doubting the impact they have. However, there are the allergens that I mentioned that re already present at WDW, and cannot be controlled, yet people who have varying levels of reactions to these allergens visit WDW, and have found a way to minimise the effect the allergens have on them, otherwise the reactions would be bad enough that they would not visit. People who are allergic to pets should be able to control their reaction to dogs just as other people control their reaction to dust, pollen, mold, etc, especially when interaction with dogs at WDW can be controlled on a much higher level-there will be a much higher chance of breathing in pollen or dust at a WDW resort than getting close enough to a dog to have it affect you.