Question

How does an endangered species differ from a threatened species?

Answer 1

An "endangered species" is in danger of becoming extinct and a "threatened species" is at risk of becoming an endangered species.

Answer 2

Answer:

Endangered Species can be defined as any species that is in the danger of getting extinct of the overall species or a small portion of the total range. They can get   brink of extinction now.

Threatened Species: They are likely to disappear in the near future. Any species that  has the chances of getting endangered within the coming future of all the members of this species or a small portion of its total range.