"The numbers most often cited for the innervation of the glans penis and glans clitoris derive from old studies on – wait for it – cows; the results were simply co-opted for human anatomy."
Don't ask me how I came to research this today, but it was an interesting find in any case.
https://www.sciencealert.com/we-may-finally-know-how-many-nerve-endings-are-in-the-human-clitoris