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Animal Age

How old does a Javan rhinoceros get? (age expectancy)

What is the maximal age a Javan rhinoceros reaches?

An adult Javan rhinoceros (Rhinoceros sondaicus) usually gets as old as 40 years.

Javan rhinoceross are around 486 days in the womb of their mother. When born, they weight 2 grams (0 lbs) and measure 3.9 cm (0′ 2″). As a member of the Rhinocerotidae family (genus: Rhinoceros), their offspring is 1 babies per pregnancy. Fully grown, they reach a bodylength of 3.1 meter (10′ 3″).

As a reference: Usually, humans get as old as 100 years, with the average being around 75 years. After being carried in the belly of their mother for 280 days (40 weeks), they grow to an average size of 1.65m (5′ 5″) and weight in at 62 kg (137 lbs), which is obviously highly individual.

A Javan rhinoceros gets as old as 40 years

The Javan rhinoceros (Rhinoceros sondaicus), also known as the Sunda rhinoceros or lesser one-horned rhinoceros, is a very rare member of the family Rhinocerotidae and one of five extant rhinoceroses. It belongs to the same genus as the Indian rhinoceros, and has similar mosaic, armour-like skin, but at 3.1–3.2 m (10–10 ft) in length and 1.4–1.7 m (4.6–5.6 ft) in height, it is smaller (closer in size to the black rhinoceros of the genus Diceros). Its horn is usually shorter than 25 cm (9.8 in), and is smaller than those of the other rhino species. Only adult males have horns; females lack them altogether.Once the most widespread of Asian rhinoceroses, the Javan rhinoceros ranged from the islands of Java and Sumatra, throughout Southeast Asia, and into India and China. The species is critically endangered, with only one known population in the wild, and no individuals in captivity. It is possibly the rarest large mammal on Earth, with a population of as few as 58 to 61 in Ujung Kulon National Park at the western tip of Java in Indonesia. The Javan rhinoceros population in Vietnam’s Cat Tien National Park was declared to be extinct in 2011. The decline of the Javan rhinoceros is attributed to poaching, primarily for their horns, which are highly valued in traditional Chinese medicine, fetching as much as US$30,000 per kg on the black market. As European presence in their range increased, trophy hunting also became a serious threat. Loss of habitat, especially as the result of wars, such as the Vietnam War, in Southeast Asia, has also contributed to the species’ decline and hindered recovery. The remaining range is within one nationally protected area, but the rhinos are still at risk from poachers, disease, and loss of genetic diversity leading to inbreeding depression.The Javan rhino can live around 30–45 years in the wild. It historically inhabited lowland rain forest, wet grasslands, and large floodplains. It is mostly solitary, except for courtship and offspring-rearing, though groups may occasionally congregate near wallows and salt licks. Aside from humans, adults have no predators in their range. The Javan rhino usually avoids humans. Scientists and conservationists rarely study the animals directly due to their extreme rarity and the danger of interfering with such an endangered species. Researchers rely on camera traps and fecal samples to gauge health and behavior. Consequently, the Javan rhino is the least studied of all rhino species. Two adult rhinos with their calves were filmed in a motion-triggered video released on 28 February 2011 by WWF and Indonesia’s National Park Authority, which proved it is still breeding in the wild. In April 2012, the National Parks Authority released video showing 35 individual Javan rhinos, including mother/offspring pairs and courting adults. There are only 58 to 68 individuals left in the wild, and none in captivity, after the death of a male rhinoceros named Samson. Samson died in April 2018 at 30 years of age, far younger than the species’ usual lifespan of 50 to 60 years, so DNA testing is being conducted to explore the cause of death, including the possibility of inbreeding degeneration.

Animals of the same family as a Javan rhinoceros

Not really brothers and sisters, but from the same biological family (Rhinocerotidae):

Animals that reach the same age as Javan rhinoceros

With an average age of 40 years, Javan rhinoceros are in good companionship of the following animals:

Animals with the same number of babies Javan rhinoceros

The same number of babies at once (1) are born by:

Weighting as much as Javan rhinoceros

A fully grown Javan rhinoceros reaches around 1740 kg (3836.04 lbs). So do these animals:

Animals as big as a Javan rhinoceros

Those animals grow as big as a Javan rhinoceros: