HD Wallpaper: Sumatran Tiger
This is the tiger from San Antonio zoo and from Nicolas courtesy can be downloaded under CC0 license for use as desktop background, homescreen phones or in other projects (blog articles, apps, templates...) that you might have.
Widescreen Desktop / Macbook: 2560x1600 (fits on: 1920x1200, 1440x900, 1280x800)
Samsung Galaxy Tab & iPad: 2048x1536 (compatible with almost all tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many smartphones)