What are the differences between the different words for mammoth? 猛犸和毛象有什么区别？
They are the same, just translated in different ways.


猛犸 is a transliteration. 猛 means robust dog. 《说文解字》: 猛，健犬也。 犸 seems a more modern character, only used here.
长毛象 is more common than 毛象. The literal translation is "elephant with long hair".