We will report on the anisotropy in (Pb)SnMnTe, studied by ferromagnet
ic resonance. We have found a cubic anisotropy with a = 73 x 10(-4) cm
-1 for Sn1-xMnxTe and a = 200 x 10(-4) cm-1 for Pb0.28-xSn0.72MnxTe. W
e will indicate some possible explanations for this anomalously large
anisotropy.