Apple's latest version of OS X went on sale this week, and it comes with some purr-fect new features including a new big-cat name: Mountain Lion! Whether you're an Apple adherent or a PC promoter, we thought we'd have some feline fun of our own with a quiz about all of Apple's crazy software cats. See if you can match the names of the previous OS X versions to the big-cat babies in this quiz!

Source: Getty
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