Wikipedia:How many legs does a horse have?

-  Jack and the Five Legged Horse 

My uncle once said, "Boy, do you see that horse?"
 * Yessir.

"How many legs does that horse have?"
 * Four.

"Now what if I say that a horse's tail is a leg, too?"
 * Uh...

"If I call a horse's tail a leg, how many legs does that horse have?"
 * Five?

"Boy, will you never learn? It doesn't matter what you call something. That horse still has four legs."  - Sometimes when confronted with a difficult challenge we reply, That's not true! We say, That's not a ( vanity COI page)/(rant)/(personal attack)/(tail); that's a (noteworthy article)/(discussion)/(polite comment)/(leg). But this changes nothing.

It's never enough to reply to a comment by saying ''You're wrong! That's not true!'' If it really is a leg, then show us how.

When arguing, make sure you add really new legs to your stand.

Very well, you say it does not have five legs: I say it has nine!

 * 1) No horse has five legs.
 * 2) Any horse has four legs more than no horse does.
 * 3) Therefore, a horse has nine legs.

A horse has, in fact, an infinite number of legs

 * 1) We first must establish that horses have an even number of legs – yes?
 * 2) A horse has forelegs and hind legs.
 * 3) It has two hind legs.
 * 4) Fore plus two hind is six, thus it has six legs
 * 5) Six is an odd number of legs for a horse to have
 * 6) But the number must also be even!
 * 7) The only number which is both even and odd is infinity (note: strictly speaking, infinity is not a number but...)
 * 8) Therefore, a horse has an infinite number of legs
 * 1) Therefore, a horse has an infinite number of legs

The longer you count, the more legs a horse has

 * 1) A horse has four legs
 * 2) Also, it has two forelegs at the front and two hind legs in the back. This makes it 8.
 * 3) It has two legs on the left side and two legs on the right side. This totals 12.
 * 4) It also has four perfectly visible legs from below. Now we have 16 of them.
 * 5) And we haven't even started counting legs on each corner!

Beating a dead horse
Some editors are so convinced that the horse has five legs that they will continue to return to the issue long after everybody else has accepted the consensus view that horses have four legs. Many of the most dedicated proponents of the five-leg school will assert that fivelegism is as valid a view as fourlegism, and that fourlegism is only a point of view. Often they will continue this to the point where they are, in truth, beating the bloody mark where the dead horse once lay.

On the other hoof...
If someone is writing about a horse that has five legs then, as tedious and boring as it may be, it is a good idea to check the references and reasons they have written about it. It may just be there was a genetic manipulation, or surgical graft, or something else altogether. Just because the only horses you have encountered have had four legs, doesn't mean that a five legged horse might not exist. Some deer have five legs.