Indeed we had the Alpha bear following a reproduction "lambda" (lvl 40 and 20), my teammate was not present to take care of it (besides they did not expect the reproduction to work) it was by pure chance when I went to their base that I discovered the Alpha baby, it was unclaimed at 23.3% maturation, I had time to claim it and it died from cold.So several suppositions,Either it’s a bug and having Alpha is a bug.Either it is foreseen and we have a minimal % of Alpha (and therefore useful for island boss monsters)