
The "Innovation Center for U.S. Dairy" / "DairyGood" has published the result of 1,000 survey of Americans.
7% believe chocolate milk comes from brown cows.
While that's funny, their web page about adding sugar to milk is misleading, by paltering: using truthful statements to lead a listener to a false conclusion
"While some have concerns about sweeteners in milk, leading health and nutrition organizations have recognized that the small amounts of added sugars that can be used in nutrient-dense foods, like chocolate milk. For some people, the calories from sugar in flavored milk are a worthwhile trade-off for all of the nutrients milk provides.
In fact, dairy companies have come together to lower sugars in flavored milk available in schools by 38 percent. This lower-sugar, fat-free option has an average of 134 calories per 8 oz., which is only about 30 more calories than white milk."
https://dairygood.org/Content/2014/4-Chocolate-Milk-Myths-Busted