Based on research results, loss of habitat is the main reason why species become endangered . A loss of habitat can occur because of many factors. The snowmelt, drought, global warming,...All the climate changes impact on the habitat where the animals live. If they are unable to adapt to these new environments, they can become endangered and then extinct. In addition, the activities of humans can also contribute to the loss of habitat. The forest is logged for housing, industry,...As the result, the animals lose their habitat, they have to move to new places which can be not suitable for them. In other case, the animals don’t have anything to eat, they move to local areas and are hunted. We should take some actions to protect endangered species.