Of the hundred or so known species of hyena—living and extinct—that stalked the earth, all have been meat eaters or omnivores except one, the aardwolf, which, mysteriously, eats termites.
source https://www.lifetechnology.com/blogs/life-technology-science-news/was-this-hyena-a-distant-ancestor-of-todays-termite-eating-aardwolf
