I can't imagine that I'm the first to do this successfully, but I have managed to modify animals. I have also put skins on my character, but that is not relevant here. So I am just going to plainly ask: has anyone tried to put a skin on an animal or mob in Minecraft PE? I use my old 4th gen iPod touch, with iOS 5.1.1. I used cydia to get iFile. I just use the iFile app to "modify" the files. Also, I can try to explain how I do it if anyone curious.
Putting skins/ textures on animals and Mobs?