I had to research it, last time I heard it it was different. Trivia:Good morning Dale. Love that last quote. lol.
Here's the research of the source:
Lincoln quote sourced: Calf’s tail, not dog’s tail
And the original narrative about Lincoln:
In discussing the question, he used to liken the case to that of the boy who, when asked how many legs his calf would have if he called its tail a leg, replied, ” Five,” to which the prompt response was made that calling the tail a leg would not make it a leg.




