The southern tree hyrax (''Dendrohyrax arboreus''), also known as the southern tree dassie, is a species of mammal in the family Procaviidae. The southern tree hyrax is mainly found in the south central eastern side of

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

Description

The southern tree hyrax has a guinea pig-like appearance. It has long, soft, grey-brown fur that covers the body, while the underside is paler. Hairs are lighter near their tips and the ears have a fringe of white hair. They weigh about on average, and have an average length of .

Distribution and habitat

It is found in

Angola , national_anthem = "Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordina ...

Zambia Zambia (), officially the Republic of Zambia, is a landlocked country at the crossroads of Central, Southern and East Africa, although it is typically referred to as being in Southern Africa at its most central point. Its neighbours are ...

Democratic Republic of the Congo The Democratic Republic of the Congo (french: République démocratique du Congo (RDC), colloquially "La RDC" ), informally Congo-Kinshasa, DR Congo, the DRC, the DROC, or the Congo, and formerly and also colloquially Zaire, is a country in ...

Kenya ) , national_anthem = " Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi , ...

Uganda }), is a landlocked country in East Africa. The country is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the south by Tanzania. The south ...

, Rwanda,

Burundi Burundi (, ), officially the Republic of Burundi ( rn, Repuburika y’Uburundi ; Swahili: ''Jamuhuri ya Burundi''; French: ''République du Burundi'' ), is a landlocked country in the Great Rift Valley at the junction between the African Gr ...

Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands ...

Malawi Malawi (; or aláwi Tumbuka: ''Malaŵi''), officially the Republic of Malawi, is a landlocked country in Southeastern Africa that was formerly known as Nyasaland. It is bordered by Zambia to the west, Tanzania to the north and northe ...

Mozambique Mozambique (), officially the Republic of Mozambique ( pt, Moçambique or , ; ny, Mozambiki; sw, Msumbiji; ts, Muzambhiki), is a country located in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Mala ...

, and

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring count ...

. Its natural

habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...

s are temperate

forest A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...

s, subtropical or tropical dry forests, subtropical or tropical moist lowland forests, subtropical or tropical moist

montane forest Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucia ...

s, moist

savanna A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to ...

, and rocky areas. It may be found at elevations up to .

Behaviour

The tree hyrax lives in trees and is mostly nocturnal, as opposed to the

rock hyrax The rock hyrax (; ''Procavia capensis''), also called dassie, Cape hyrax, rock rabbit, and (in the King James Bible) coney, is a medium-sized terrestrial mammal native to Africa and the Middle East. Commonly referred to in South Africa as the das ...

which lives among rocks and is mainly diurnal. It occurs singly, in pairs or in small groups, favouring hollow trees and dense foliage. Tree hyrax are extremely able climbers with remarkable balancing skills, they do walk on the ground, but will often 'bounce' along rapidly then stop and then move rapidly again to get to the next piece of cover. Its extraordinary call, heard mainly at night, is a series of blood-curdling shrieks building up to a crescendo. These territorial calls are produced mainly by the males.

Ecology

Martial and tawny eagles, leopards, lions, jackals, spotted hyenas, and snakes prey upon the southern tree hyrax. In Rwanda, the most common predators are feral dogs. The limited amount of time the hyrax spends on the ground at night may be a predator avoidance strategy. Humans sometimes also eat the hyrax. The eastern tree hyrax (''Dendrohyrax validus'') was given ecological classification Near Threatened (NT) in 2015.

Diet

The southern tree hyrax is a herbivore. It consumes many different parts of the plants such as the leaves, petioles, twigs, shoots, fleshy fruit, and hard seeds. Individual species are too many to list, but include ''

Hagenia abyssinica ''Hagenia'' is a monotypic genus of flowering plant with the sole species ''Hagenia abyssinica'', native to the high-elevation Afromontane regions of central and eastern Africa. It also has a disjunct distribution in the high mountains of East A ...

'', ''

Hypericum revolutum ''Hypericum revolutum'' is a shrub or small tree in the genus ''Hypericum'' native to Arabia and Africa. It is evergreen, with leaves opposite, closely spaced and crowded at the ends of branches, c. 20 × 5 mm, green to slightly glaucous, se ...

'', and '' Podocarpus falcatus''.

Reproduction

Milner and Harris reported that they were unable to determine the mating system but speculated that it may be facultative monogamy/polygyny. After a gestation period of 7 months, 1–2 young are born. At birth they are well developed and they weigh 170–200 grams. In rescue conditions they can put on around 4% weight gain per day on a cows milk formula, however some youngsters do not thrive on this formula. Very young hyraxes have poor coordination. At an estimated age of under one week they cannot follow their mothers along a branch, but their mobility skills develop rapidly. Within two weeks they will use a midden. They will eat a diverse range of leaves, shoots, bark, fruit, and flowers. Youngsters appear to learn what leaves to eat by both watching and tasting what the adult is chewing. At about five months their fur develops darker spots often around guard hairs. The southern tree hyrax reaches maturity at about 12 months old.

Taxonomy

, the most recent treatment of the genus ''Dendrohyrax'' retains ''D. validus'' as a full species.