CITES status categories are:

I   = Appendix I:      Species threatened with extinction

II  = Appendix II:    Species not yet threatened, but which could become endangered if trade is not controlled.

III = Appendix III:   Species that are protected by individual countries within their borders,  and for which co-operation of other convention signatories is sought. 

IUCN threatened categories are:

E= Endangered: A taxa in danger of extinction, and whose survival is the causal factors continue operating.

V= Vulnerable: A taxa believed likely to move into the "Endangered" category in the near future if the causal factors continue operating.

R= Rare: A taxa with small world population that is not at present "Endangered" or "Vulnerable".

I = Indeterminate: A taxa known to be endangered, vulnerable or rare, but for which there is not  enough information to say which of the three categories is appropriate.

K= Insufficiently known: A taxa suspected but definitely not known to belong any of the above  categories because of lack of information.

T= Threatened: A taxa that can not be ascribed to any of the previous categories.

Threatened species are defined as those animals listed by the IUCN's Red Data Book , the Convention on International Trade in Endangered Species (CITES) (Appendices I, II, and III), and animals protected under Schedule I (Protected Wildlife, pertaining to section 10) of the National Parks and Wildlife Conservation Act of 2029 (1972/1973) of Nepal. These species are considered to be rare, endangered, threatened or vulnerable to extinction within Nepal or elsewhere within their ranges. Species listed by CITES are considered threatened by unregulated international trade. This list was developed from information contained in the 1988 Annotated CITES Appendices and Reservations prepared by the Wildlife Trade Monitoring Unit of the IUCN Conservation Monitoring Center in Cambridge, England.