If he’s right about dead bears, this is a very good answer to the complaint that no remains have been found. Bottom line, they’re too damned rare.
"Rare" implies seldom or not often found.
In the case of "Big Foot", since it has NEVER been found - the term "rare" is inappropriate...
Never found, unproved or nonexistent is more appropriate..
Vanishingly rare. Glad to see someone with some reading comprehension, it’s refreshing. Shortly before his death, Krantz had a revised edition of his book, I recommend the first edition because I’ve read it, but the revised edition is probably also good.