In-situ population: ~50
IUCN Red List Classification: Critically Endangered
The biggest threats to the Javan rhino is the very small size of the remaining population and poaching. After poaching incidents, the exact number of rhinos remaining is unknown. All Javan rhinos live in a single population in Ujung Kulon National Park, making the species extremely vulnerable to natural disasters and disease. Numbers of Javan rhinos have increased during the last few years, thanks to the expansion of the habitat available for them into neighbouring Gunung Honje National Park.

In-situ population: 34-47 individuals
IUCN Red List Classification: Critically Endangered
There are now estimated to be between 34 and 47 Sumatran rhinos left in the wild, and efforts are now being invested in captive breeding in an attempt to boost the population. Historically, poaching had depleted the population but their biggest threat today is habitat loss – including forest destruction for palm oil and paper pulp – and increasingly, small, fragmented populations failing to breed.

In-situ population: 6,421
IUCN Red List Classification: Critically Endangered
Large-scale poaching saw black rhino populations decline from around 70,000 individuals in 1970 to just 2,410 in 1995 – 96% over 20 years. Thanks to the persistent conservation efforts across Africa, black rhino numbers have risen since then to a current population of above 6,400 individuals. Importantly, their geographic range has also increased, thanks to successful reintroduction projects.

In-situ population: 4,018
IUCN Red List Classification: Vulnerable
Greater one-horned rhinos have made a startling comeback from the brink of extinction. By 1900, fewer than 200 individuals remained, but there are now more than 4,000 individuals, due to concerted conservation efforts in both India and Nepal; their remaining strongholds. Although poaching remains a high threat, particularly in Kaziranga National Park, a key area for the species, the need to expand their habitat to provide space for the growing population is a key priority.

In-situ population: 17,464
IUCN Red List Classification: Near Threatened
The overwhelming rhino conservation success story is that of the Southern white rhino. The white rhino recovered from near extinction with numbers as low as 50 – 100 left in the wild in the early 1900’s, this sub-species of rhino has now increased to >17,000, with the vast majority living in a single country, South Africa. Despite this, it is the subspecies most threatened by poaching. The Northern white rhino, however, has only two females left, after the last male, Sudan, died in March 2018.