Habitat destruction causes animals to move to find shelter in another habitat.
Mammals are a class of animal.
When a mammal's habitat is destructed, it causes the mammal to move to find shelter in another habitat.
When a mammal's habitat is destructed, what does it do?

  Destroy crops
  death and devastation
  stay in the habitat
  move to another habitat
  destroy the habitat further
  cause their death
  ignore the situation
  prevent heat loss