As you can see from the list above, with the exception of the first OS X beta, all versions of the Mac operating system from 2001 to 2012 were named after big cats, from Cheetah to Panther to the ...

Mountain Lion, the last of the “big cat” versions of the Mac operating system launched in July 2012 (latest version 10.8.5) and can run on the following Macs: MacBook (Late 2008 to 2010) ...

Mac OS X 10.1 is an important operating system release for Apple--one that could open the floodgates of new software applications and of more Mac OS users choosing to upgrade.