Since this drifted far enough away from monkeys, I will point out that knowing that there is, or were, over a dozen hyenas up by the Lawrence Hall of Science gives me daymares.
Hyenas scare me. The idea of going out for a bike ride or health run up in that area and being consumed by those other-wordly creatures is unacceptable.
Hyenas ONLY belong in Africa, goddammit. I really don't like them in the North East Bay, where I LIVE!
Edit update: I'll be damned, they went away and it was years ago. All that anxiety for nothin.....at least after the closure. I still imagine myself hikin at Wildcat and getting mobbed by those laughing demon-dogs-of-hell. I actually was encircled last summer by stupid coyotes alone on a cow trail and that bugged me enough to want to carry a pistol or something.
https://www.dailycal.org/2014/05/04/worlds-captive-hyena-colony-discontinued-due-lack-funding/