Yes, a cat’s whiskers do fall out. They regrow. They are just like any other hair on a cat’s body in that respect. Although of course they much longer, they are thicker, they are more deeply embedded into the cat’s tissue and there are more nerves surrounding the base of the hair than the other hairs found on a cat’s body.
Before I wrote this very short article I checked the books that I have about cats shedding their whiskers. There was no reference in any of the excellent books that I have on this natural anatomical feature.
However, like any other cat owner I have seen whiskers lying around the house from time to time. They are quite visible because of their circumference and length. Therefore we know that cat’s whiskers do fall out from simple personal experience. They grow back as mentioned. They have to otherwise over the cat’s lifetime he/she would have none left!
You may know that whiskers are a very important part of the cat’s anatomy and I have discussed them in some detail on this page. There are many other pages on the site on whiskers!
Some cat owners collect their cat’s whiskers which have been shed around the home.