How does cutting down trees affect animals?
The animals need their habitat to survive, and many, many animals depend on the forest. The destruction of the forest kills them or takes their habitat away, possibly causing the species to become extinct.
There are many negative effects from cutting down trees. Firstly, it can reduce the food available for animals, meaning that animals will starve and their population will reduce. It can also affect animals that use trees as transport, eg gibbons, and therefore reduce the animal packs which will affect their population.
It affects the animals because the rainforest animals lose their homes and people need trees because trees give oxygen. The animals decrease rapidly because there is no shelter, and some animals can only adapt to the rainforest, so there won't be another home for them. Cutting down trees affect people because oxygen is a big part of the atmosphere around us; we need to breathe good oxygen.