Interesting and funny
I, too, was taught "hooves" and think "hoofs" looks funny--but the language seems to change depending where you are these days. And, about the dictionaries, I find it hard to believe that the writers think that eliminating a word means it suddenly disappears from everybody's vocabulary.
Speaking of which, and off topic, I find it insulting how some people make fun of another for using "big words." The one day, my mother was singled out an ridiculed by her coworkers for using the word "intrinsic." Yesterday (though I'm sure it was a joke), she laughed at me when I used the word "indicative" in a sentence (for some reason, I do this a lot--I'll just insert a word not often used in everyday conversation into my vocabulary--and the crazy thing is, sometimes I can't even define it, but somehow know it works in that context!)