Wildlife species may become totally extinct if no measures are taken to protect them. Some of reasons for extinction of wildlife are.
a) Destruction of their natural habitats by environmental pollution, deforestation, soil erosion, overgrazing, increased urbanization, forest fires, and developmental works.
b) Indiscriminate hunting
Example: Cheetah is extinct in India
c) Introduction of exotic species.
d) Overexploitation of natural resource.
e) Disturbance in migratory routes.
f) International trade in rare animals.
g) Lack of education.