Every animal needs a place to live.
The environment in which an animal lives is called a habitat. An animal's habitat includes food, water, shelter, and space in an arrangement appropriate to the animal's needs. If any of these components of habitat is missing or is affected significantly so that the arrangement for the individual animal or population of animals is no longer suitable, there will be an impact. The impact will not necessarily be catastrophic, but can be. There are a great many additional limiting factors beyond those of suitable food, water, shelter, and space.