Two layers of fur is neat. The mechanics of how different types of eyes form images is neat. Tapping the surface of water to trick fish into thinking a bug landed is so cool. So weird that in captivity, the cats tend to come out male more often. Suction cup feet is neat. The gland on the back is so silly. Th discourse over using fossilized hyrax poop as perfume is kinda dumb; I opt more for the feces to be used as research instead.