Poaching and habitat loss have reduced the number of Amur Leopards to less than 50 in the wild. Native to far eastern Russia and the North Korea and Chinese border, they are extremely endangered.
There are only 350-400 Siberian Tigers left in the same area of the world. Again, illegal wild game poaching (the Times recently had an article about rich Chinese eating tigers after watching their deaths as a way to show off their wealth) and habitat destruction have reduced the tiger population to dangerous levels.
The South China tiger may be extinct in the wild; there are about 100 in captivity.
Other endangered big cats include the cheetah, Eurasian lynx, Florida panther, lion, snow leopard and Sumatran tiger. The only way to save these beautiful creatures is to change the behavior and ideas of local communities.
I have been using the book “Going Going Gone: 100 Animals and Plants on the Verge of Extinction” (http://www.bloomsbury.com/us/going-going-gone-9781408186305/) as reference for my endangered species paintings.
You can also find out more at http://www.iucn.org/