What is the main effect of overpopulation on animals?

Animal overpopulation is when the ecosystem is unable to support or handle the area of animals. It means that there are too many animals to handle the area in one place. Some animals eat the same food, and the food in the area can go lower and lower until no animals can eat anymore. Then more animals come to the area to eat, but no food is available for them to eat. They can lead to difficult and hard lives with the amount of resources.