1) At risk 2) In danger 3) In peril 4) Menaced 5) Vulnerable 1) Looked like bad weather 2) Shook a fist at 3) Vulnerable 
• (imp. & p. p.) of Threaten
Applies to an animal that may become endangered if conditions surrounding it begin to or continue to deteriorate.
Animals or plants that are in danger of extinction in a part of their range.
A species likely to become endangered in the foreseeable future. ... (05 Dec 1998) ... 
Animals or plants that are in danger of extinction in a part of their range.
a species that is not yet endangered, but is in danger of becoming endangered. A species that appears on Appendix II of the Endangered Species Act or on a State List of protected species as having a Threatened status.
[adj] - (of flora or fauna) likely in the near future to become endangered
Referring to a species (plant or animal) that could become endangered in the foreseeable future.
not yet close to extinction, but in great danger
adjective (of flora or fauna) likely in the near future to become endangered; `the spotted owl is a threatened species, not yet an endangered one`
a species present in its home range but in declining numbers and in danger of becoming endangered. On the other hand, a species that has been listed as endangered but whose numbers are increasing may be moved from endangered status to threatened.
The term refers to taxa for which the potential for loss exists but for which there is insufficient data to determine whether they are endangered.
Applies to those species likely to become endangered within the foreseeable future.