GFAP and meningoencephalitis: After “Knut’s” diagnosis, neural antibodies have been described in cats with limbic encephalitis (LGl1), dogs with meningoencephalitis of unknown origin (MUO) (NMDAR), necrotizing encephalitis (anti-astrocytic GFAP) and one dog presenting with acute epileptic seizures and erratic behavioral changes (GABAA-R) (3, 17, 21, 22, 24).