Unfortunately true It has been rumored that some may survive, along with relic mainland Sumatran Rhinos (and yes I know that Summie Rhinos can be found on the mainland still), in the dense forests of Burma though it's unlikely. I suggest you reread the beginning of this thread as that question was asked and discussed earlier. ~Thylo
It is 22 according to the authoritative Rhinoceros in Captivity. In the annals of zoo records, there is a record/drawing from 1867 of a purported Javan rhino exhibited in Amsterdam Zoo. Described by J. Nieuwendijk in more detail.
It’s kind of their only hope in personnaly think it’s necessarily and that they should release them in their original range on the saver Thailand of Malaysia.