So recently I had decided to update my game to Minecraft's latest update: 1.7.8. But when I had started up my world earlier today, I had noticed a lot of strange things in my world. For instance, my three tamed wolves that I had became "untamed," but where still sitting as If they were still tamed. They also moved around normally like they would if they were normally walking around. My two NAME TAGGED and TAMED horses had disappeared except for one who had lost it's name tag (I named all of them). I don't know whether this is a bug or glitch following update 1.7.8, or what.