I don't know why, but every time I see cows, I have the urge to go "mmmooooooooooo." This does not happen with horses, sheep, goats, pigs or any other animals. Only cows. Of course, those animals don't go "mmmooooooo," but you know what I mean. I don't say "oink oink" when I see a pig. I only try to imitate a cow.
Stop moooking fun of me!