Only one tree may shelter hundreds of species of insects, fungi, mosses, mammals and plants. Depending on the type of food and shelter they need, different forest animals need different types of habitat. Without trees, the creatures of the forest would have nowhere to settle.
- Young open forests : These forests occur as a result of fires or forest farms. Shrubs, herbs and young trees attract animals like black bears, yellow goldfinch and blue-blacks in North America.
- Middle-aged forests : In middle-aged forests, larger trees are starting to become too small for lower trees and vegetation. An open canopy allows the growth of preferred ground vegetation such as salamanders, wavitis and grooves.
- Older forests: With large trees, a complex canopy and a highly developed vegetation subfree, the old forests offer a habitat to a range of animals, including bats, squirrels and many birds.