Tree Shrews:

The treeshrews (or tree shrews) are small mammals native to the tropical forests of Southeast Asia. There are 20 species in 5 genera. 

Although called treeshrews, they are not true shrews (they were previously classified in the Insectivora however), and not all species live in trees. 

Classification

Family Tupaiidae
o Genus Anathana
+ Madras Treeshrew, Anathana ellioti
o Genus Dendrogale
+ Bornean Smooth-tailed Treeshrew, Dendrogale melanura
+ Northern Smooth-tailed Treeshrew, Dendrogale murina
o Genus Tupaia
+ Northern Treeshrew, Tupaia belangeri
+ Golden-bellied Treeshrew, Tupaia chrysogaster
+ Striped Treeshrew, Tupaia dorsalis
+ Common Treeshrew, Tupaia glis
+ Slender Treeshrew, Tupaia gracilis
+ Horsfield's Treeshrew, Tupaia javanica
+ Long-footed Treeshrew, Tupaia longipes
+ Pygmy Treeshrew, Tupaia minor
+ Calamian Treeshrew, Tupaia moellendorffi
+ Mountain Treeshrew, Tupaia montana
+ Nicobar Treeshrew, Tupaia nicobarica
+ Palawan Treeshrew, Tupaia palawanensis
+ Painted Treeshrew, Tupaia picta
+ Ruddy Treeshrew, Tupaia splendidula
+ Large Treeshrew, Tupaia tana
o Genus Urogale
+ Mindanao Treeshrew, Urogale evereti

Family Ptilocercidae
o Genus Ptilocercus
+ Pen-tailed Treeshrew, Ptilocercus lowii