What is an endangered species? Give an example of an endangered plant and animal species each?

an endangered species is a species which has been categorized as very likely to become extinct in the near future. And the list of some endangered animals:-
1. Amur leopard estimation 60 remaining.
2. Amur Tiger estimation 450 remaining.
3. Asian Elephant estimation 40,000 – 50,000 remaining.
4. Bengal Tiger estimation 2,500 remaining.
5. Black –Footed Ferret. 300 remaining.
6. Black Rhino about 5,000 remaining.