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Text and photos by Nick Baker, unless credited to others.
Copyright © Ecology Asia 2025

 
     
 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

   
   
 
Horse-tailed Squirrel 
Sundasciurus hippurus
   
   

Order : RODENTIA
Family : Sciuridae
Species : Sundasciurus hippurus

Head-Body Length : up to 29 cm
Tail Length : up to 29 cm
Weight : Up to 365 grams

Sundasciurus hippurus (Horse-tailed Squirrel) inhabits primary rainforest and mature secondary forest up to about 1500 metres elevation. It is mainly arboreal, but occasionally ventures to the lower parts of trees, or even to the ground to forage.

In the field it is identified by its thick, dark, bushy tail which contrasts with the body fur (some specimens in Borneo may have a reddish-brown tip to the tail). There are many subspecies, with varying fur colour. The body fur can vary from grey to light brown on the upperside, and from reddish brown to white on the underside. The head is dark grey.

Its diet comprises mainly forest fruits and seeds, though small insects may also be eaten.

Sundasciurus hippurus ranges from southern Thailand through Peninsular Malaysia to Borneo and Sumatra. It is not recorded from Singapore.


Fig 1 : Example from lowland forest in Peninsular Malaysia.  Photo thanks to Con Foley.

Fig 2 : Example from hill forest at Bukit Tinggi, Pahang, Peninsular Malaysia.



References :

Francis, C.M. 2019. A Field Guide to the Mammals of South-east Asia. Second Edition. New Holland. 416 pp.

Lekagul, B., McNeely, J., 1977. Mammals of Thailand. Association for the Conservation of Wildlife, Thailand. 758 pp.

Payne, J., Francis, C.M., 1998. A Field Guide to the Mammals of Borneo. The Sabah Society.

Fig 1
  
©  Con Foley

Fig 2