With Photoshop, image editors have been doing amazing things. There are a lot of pictures showing human-animal mash-ups, the most hilarious are the birds with arms. If you have no idea what we are talking about, you may want to check out the following 15 pictures. The 15 pictures showing birds with arms look very realistic. I bet these birds can beat you in an arm wrestling contest. You can find more of these pictures at here.