The tree hyraxes or tree dassies are the two species in the genus Dendrohyrax. They are mammal

Mammal

Mammals are members of a class of air-breathing vertebrate animals characterised by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young...

s in the Procaviidae family (the only living family within the Order Hyracoidea) . The two species are:

• Eastern Tree Hyrax (Dendrohyrax arboreus), found in East and Southern Africa
• Western Tree Hyrax
  Western Tree Hyrax
  The Western Tree Hyrax , also called the Western Tree Dassie or Beecroft's Tree Hyrax, is a species of tree hyrax, members of the family Procaviidae.-Range and habitat:...
  
  (Dendrohyrax dorsalis), found in West and Central Africa

The tree hyrax is a small nocturnal mammal that is related to elephants and aadvarks. They have 4-toed front feet and 3-toed back feet with rounded nails, and rubbery soles that help them climb.

The previously recognized Dendrohyrax validus is included in Dendrohyrax arboreus until detailed taxonomic research is conducted.