4K HD Wallpaper: Cute Dog need a nap
I think the cute dog from image is a Golden Retriever. Jacob Ufkes is the photographer and from his courtesy the image with the cute dog is free under CC0 license. Check the dog wallpaper at optimal resolution and download if you like for apply in desktop backgrounds, homescreen phones or for use in blog articles, web design projects...
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many phones)