The animals need to be killed in a special way.

This is a question which animals never need to ask.

This is a problem for them, as all animals need water to survive.

Children and animals need not be excluded from treated areas.

Larger animals, especially, need a large habitat free of human activity.

The animal does not need to be restrained in any way.

Plants and animals also need air to live: it is very important to everyone.

People and animals need fresh water to drink, so they often live by the side of a river.

So many animals, at some time in their lives if not throughout them, need a home.

So the animals need predators to keep in balance with resources/land.