I think this figure of 35-40 is actually incorrect. It comes from newspapers and is the conventional view but a more scientific and modern assessment is 12 Amur leopards in the wild. Yes, exactly 12. Strange isn't it?
Add to that the 100-140 Amur leopards in captivity in Europe as part of a European breeding program and you have about 150 Amur leopards in the world excluding those in America and other continents. It seems there are about 200-300 in captivity in total worldwide. They are the rarest big cats in the world.
It would seem doubtful that the wild Amur leopard can survive because of genetic diversity - it is too low and inbreeding sets in causing sterility. Habitat loss is a major threat. The leopard has the widest range of all the wild cats. The Amur leopard is one of 9 subspecies of the leopard.
It is sad to think that these cute little cubs will never live in the wild. See a page on the leopard.
Interested? Why do leopards have spots?