Hey, all of you Mac OS X loving cats and kittens, it is Big Cat Week at National Geographic. That means OS X Wallpaper junkies can get their fill of many, many new Mountain Lion, Lion, Tiger, Jaguar, Cheetah, Panther, Leopard and Snow Leopard pictures.

Kittehs! Yes, it is Big Cat Week at National Geographic, which is a great place to find soft n’ fury faces for your Mac’s desktop. Just find the image you want to use as your wallpaper (a.k.a. desktop picture), right-click (two-finger tap) and select “Use Image as Desktop Picture.”

Alternately, if you would like to display a collection of Nat Geo’s Big Cat Week pictures as a slideshow on your desktop, just follow this simple tutorial.

1.) In the Finder, navigate to the Pictures folder, create a New Folder (Command + Shift + N) and name it appropriately (i.e. Big Cat Week)

2.) Head back to Safari, navigate Big Cat Week, peruse the pictures and save to Pictures > Big Cat Week
— Right-click (two-finger tap), select “Save Image As,” select Pictures in the left Sidebar, select the just created Big Cat Week folder and hit Save.
— Repeat until you a dozen or so cat photos

3.) Now, open System Preferences from the Apple Menu or Dock and navigate to Desktop & Screen Saver > Desktop.
— Click the “+” (plus) button under the left Sidebar, navigate to your new Big Cat Week folder in Pictures and hit Choose.
— Lastly, click the “Change Picture” check box under main window and choose the time interval, from every 5 seconds to once a day

You are done.

However, you may have noticed that Nat Geo’s Big Cat Week photos aren’t high resolution. That said, when displayed on your Mac’s desktop, some of these pictures will look better than others and some will be just too darned blocky/pixelated to be useable.

So, experiment a little to find the Big Cat Week photos that work best for you and enjoy!

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