Translation of bison in Spanish

Some of the disadvantages are the coldness, darkness and the fact that the days are a lot shorter then as in the summer. First let me tell you what I do not like about the winter. It is the following.
I told them that in Europe not everything was perfect. I told them that there were also very dark times in that continent and that even in peaceful times live was not always easy as they had thought.
She started to walk with us and one could observe that she had lost some of the naivity many children have, due to the fact that she started to be a sales person long before she reached twelve.