Apparently the people at Apple have coincidentally named every version of their Mac OS X after Nazi Wehrmacht tanks. Check out the following excerpt from http://ormset.no/wordpress/?p=152
Mac OS X 10.0 Cheetah shares it's name with the German tank destroyer (armoured self-propelled anti-tank cannon) named Gepard, which is German for "cheetah".
The next incarnation of OSX was 10.1 Puma, with it's German armoured fighting vehicle sibling – the, well, Puma.
Enter Mac OS X 10.2 Jaguar. Like the German multiple missile-armed tank destroyers Jaguar 1 and Jaguar 2
As it's German namesake the OSX 10.3 Panther was quite an upgrade.
And now on to the big guns. The Tiger I and the Tiger II does, exactly like OSX 10.4 Tiger.
I can't imagine they did that on purpose, cat names are a fairly understandable choice for a product series. (Although again it looks like they may have nicked the idea from a company that they had some legal disagreements with in the past: read this post from tuaw.com