The first reason why we should save endangered animals is because they keep the natural order. Like if alligators went extinct then this bird that protects there eggs for protection from the alligator will then die out because all the animals would eat that bird and then the plants seeds would over populate from nothing eating it. Then a plant would get a virus and kill all the plants. That is why you want an animal to not go extinct.
The second reason why we should save endangered animals is because they help the food chain. If an animal eats deer and that animal dies then the deer will over populate. Then a deer will get a virus and all the other deer will get the virus and die. Which is really bad.
The third reason why we should save endangered animals is because of the devastation. Like if pandas go extinct then billions of people will be devastated and will make everyone sad. However, it will help in a way because then people will be more careful and will start helping the animals.
In our world today there are many endangered animals and now you know why. because of the natual order,food chain,and because of the loss of these great creatures.