[Loki]

Earthquake hits everywhere I'm afraid, and does kill NPCs, this is probably what happened. I cannot think of another explanation, animals do not just disappear, this isn't buggy old Sphere and unfortunately despite all my magic GM powers I can't time travel to verify otherwise. EQ, FF or explosion pots are the most likely culprit though, my player character lost a lot of Mustangs that way before I realised that EQ actually finishes NPCs off unlike players.