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VOCALISATION IN THE SOUTHERN TREE HYRAX 
DENDROHYRAX ARBOREUS 
Judith Rudnai & Pat Frere 
do United Kenya Club 
P.O. Box 42220. Nairobi. Kenya 
INTRODUCTION 
The southern tree hyrax Dendrohyrax 
arbor eus (figure 1 ) is a small (1.5- 
3.00 kg) ungulate of the 
Order Hyracoidca Family 
Procavidac. The genus 
Dendrohyrax. the tree 
hyraxes, is restricted to 
Africa There are three 
species: the western tree 
hyrax D dorsalis is found in 
West and Central Africa as 
far East as Uganda, the 
southern tree hyrax D. 
arboreus occurs from eastern 
Democratic Republic of 
Congo east and south as far 
as the eastern side of southern 
Africa as well as in the Cape 
Province, and the eastern tree 
hyrax D validus occurring 
only in eastern Tanzania, the 
Coast of Kenya and some 
Islands of East Africa 
(Bolhma. 1971. Kundacli, Figure 1 
1976; Seibt ct al .. 1977), arboreus 
Various authors (Milner & Harris. 
1999; Richard. 1964; Rahm. 1957; 
Jones. 1978; Fey. 1960) mention 
vocalisation of both captive and free 
Southern tree hyrax Dendrohyrax 
