I click the picture button, I paste the appropriate URL. I click post. I save the dog.
Note that you are working with an MP4 link, not if gif or gifv. Plus OF doesn't like gifv.
http://i.imgur.com/PsYeA0w.gifv if you manually change the extension that you are trying to post to .gif, it works sorta great...
Notice the flying feathers...
Wait... is that Stoobert????