I am wondering why, anybody experienced to share his experience-knowledge, Why it was not established sustainable captive zoo population of Bengal tigers outside India? Three tiger subspecies are well represented in zoos, including Amur, Sumatran and yes Malayan (in zoos in USA and Europe too, beside others zoo like in Malaysia), and small number of Indochinese tigers, but what was the reason for failure of establishin sustainable captive populaiton of Bengal tigers? Hybridisation? Not easily acommodation of Bengal tigers?! Not enough historical founders? Anybody to know more on this topic? And what is current situation with Indochinese and Malayan subspecies in zoos? Any zoo left with pure Bengal tiger outside India? I checked the list of Zootierliste, and there were at least 90 former holders of Bengal tigers in Europe, and now none!