This week's most popular Diggs: a dog's purpose, how the iPad came to exisit

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The most popular news, videos and images as picked by Digg users during the last seven days, recorded on February 9

1. A Dog's Purpose - a six year old contemplates why a dog's life is shorter than a human's and reveals it is because dogs know how to love unconditionally while it takes humans much longer to learn how to live a good life. Hosted on imgur.com.

2. Best Use of Mac Genie Effect. EVER - a screenshot of the Mac Genie Effect (an effect used to minimize open windows on the desktop) showing characters from the science-fiction comedy Ghost Busters finally catching a ghost. Hosted on nerdist.com.

3. Heinz Revamps Ketchup Packets - an image hosted on wcbs880.com showing the new packaging design for disposable Ketchup packets.

4. How The iPad Came To Exist - a picture hosted on imgur.com that shows how a Super Mario Bros. mushroom 1up-ed the iPhone into an iPad.

5. Who needs drugs? -  a photo hosted on imgur.com of a man wearing an anti-drug "Who needs drugs" T-Shirt. On closer inspection the man's shirt has an added caption underneath reading, "No, seriously. I have drugs".