I have been making most of my zombie week stuff on my Android phone, that gif and this image here were made using an app called "DEAD YOURSELF". Super easy to make zombie photos or gifs. I noticed it works best when the starting image is square and the face is near the middle. It puts a watermark on the photos it makes, that watermark is trademarked and might keep them from getting featured as a meme, but the gifs don't get watermarked. I will be covering or clipping the watermark out for any meme submissions just to be safe. A little disappointing to make and submit a meme that doesn't get featured (trademarks, copywrited, etc stuff in the terms).