What I've learned about this peculiar animated anomaly so far is that as early as August, 2004, comments have been circulating about the gender confused cows in Barnyard. But, what I still don't know is whether the cross gender cows were an intentional statement of some kind or a bizarre oversight.
Comments on Rotten Tomatoes and IMDB vary from "oh my gosh, no wonder people think America is the stupidest nation in the world" to "lighten up, you idiots, males have udders, too."
Yeah, and men have nipples but they don't lactate!
Even the kids on Nick.com's Barnyard Message Board are smart enough to ask what's up with the udders. Yeah, they noticed. Some of them, anyway. There was one kid, however, who replied to the question "If those are boy cows (bulls), then why do they have udders?" with "Hello? Because they have to be milked."
The Oedekerk Fan Site is silent on the udders and not surprisingly, Steve Odekerk isn't returning my call. Wonder how many "got milk?" hangup calls he gets...