Why are rabbits endangered?

They are endangered because of humans hunting it for its fur.
The wild populations of rabbits were drastically reduced by the deliberate spreading of the disease myxomatosis in the 1950s and 1960s. This was done because there were so many rabbits they had become a serious pest to farmers. Myxomatosis spread out of control and seriously reduced the rabbit populations to a fraction of their former levels for many years. Although rabbits virtually disappeared from some locations as a species they were never seriously endangered. Now rabbits populations have almost recovered to their earlier peak and in some areas they are again pest to farmers.