![]() ![]() 2 out of the 7 rhinos were born there (a male and a female). This population is made of 3 males and 4 females. 7 kept in the Sumatran Rhino Sanctuary (SRS) of Way Kambas (south of Sumatra).On top of that there is as of November 2019 a population of 8 captive rhinos in Indonesia : It is estimated that only 30 to 80 individuals still live in the wild. Kalimantan (Indonesian part of Borneo).Bukit Barisan Selatan National Park (Sumatra).This is the last country in the world with a wild population. There are evidence that Sumatran rhinos still live in the wild in 4 different places in Indonesia. Haerudin, a 62 years old program manager at the Indonesian Rhino Foundation, has told in an interview that he saw them only once in the wild despite 40 years spent studying the animal. They have become almost impossible to encounter in the wild, but through camera traps. Sumatran rhinos are maybe the most endangered land mammal on Earth. It is possible that the best breeding and feeding ground for rhinos are actually dry lowland forests. But it has been assumed that they were only pushed there by human expansion. Nowadays, the remaining rhinos are found in isolated hilly parts of rainforests. We have no certitude about the optimal habitat of the Sumatran rhino. The species has only goes extinct recently in Malaysia. ![]() The original range of the Sumatran rhinos was all Southeast Asia but also parts of India and China, but the species had now gone extinct everywhere but in Indonesia. Female can give birth to a calf about every 3 years. On top of that if female don’t get pregnant and breed, they developed uterus cancer and lose their ability to reproduce. The reproductive functions of the females are quite particular : they can only ovulate if they are in contact with males. Sumatran rhinos are slow breeders : female are sexually mature at 4 and male at 7 years old. Their lifespan in the wild is estimated to be around 35 to 40 years. Female usually roams a 2’000 ha territory (3’000 ha for males). When brought together, experience in zoos and breeding facilities have shown that male and female frequently fight, resulting in injuries. Benchmark of the size of various rhino species ![]()
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