
The Common Treeshrew, tupaia glis, is a small mammal native to the dense tropical forests of Southeast Asia, including Thailand, Malaysia, and Indonesia. Resembling a squirrel in appearance, the Common Treeshrew has a slender body, measuring about 16 to 21 cm in length with a tail nearly as long, and weighs approximately 100 to 150 grams. Its coat is coarse and ranges in color from reddish-brown to gray, providing camouflage among the forest undergrowth. Notable for its sharp, pointed snout and large, forward-facing eyes, the treeshrew is an agile climber and an active forager.

| Population: | Widely distributed and relatively common, not currently considered threatened |
| Generation Length: | 2-3 years |
| Average Weight: | 160-260 grams |
| Average Length: | Body length: 16-21 cm, Tail length: 14-20 cm |
| Lifespan: | Up to 12 years in captivity; less is known about their lifespan in the wild |
| Diet: | Varied diet including both animal and plant matter |
| Conservation Status: | Least Concern (LC) |
Adapted to a life both in the trees and on the ground, the Common Treeshrew is diurnal, spending its days searching for food. It exhibits remarkable agility, darting through the forest with ease. This species is solitary or lives in small family groups, maintaining territories that they defend vigorously against intruders.
The diet of the Common Treeshrew is omnivorous, consisting of fruits, insects, and small vertebrates. This varied diet reflects its adaptability to different forest habitats and its role as both a predator of smaller animals and a seed disperser. The ability to consume a wide range of foods allows it to thrive in various ecological niches.
Reproduction in the Common Treeshrew is characterized by a relatively short gestation period of about 50 days, after which the female gives birth to one to three offspring. The young are born in a nest, which the female constructs in tree hollows or dense vegetation. Offspring develop rapidly and are weaned within a month, showcasing the species' fast growth rate.
The population status of the Common Treeshrew is currently listed as Least Concern by the IUCN, indicating that it is relatively widespread and abundant within its natural range. However, like many forest-dwelling species, it faces threats from habitat destruction and fragmentation due to logging, agriculture, and urban expansion. Conservation efforts aimed at preserving its natural habitat are crucial for ensuring the long-term survival of the Common Treeshrew and the biodiversity of Southeast Asian forests.
Climbing, jumping, walking
Territorial, with individuals or pairs defending their territory
Not specifically quantified; known for quick and agile movements
Omnivore
Forests, plantations, and gardens
Non-migratory
Southeast Asia, particularly in Indonesia, Malaysia, and Thailand
Prefers tropical forest environments
Birds of prey, snakes, and larger mammals
Insects, small animals, and various fruits
Feeds on a variety of foods including insects, fruits, and small vertebrates
Varied diet including both animal and plant matter
Monogamous or polygynous, depending on environmental conditions
1-3 offspring per litter
About 40-50 days
The common treeshrew has a brain-to-body mass ratio higher than that of humans.
These small mammals, native to Southeast Asia, showcase remarkable cognitive abilities and curiosity. Contrary to its name, the common treeshrew isn't a true shrew. Its high brain-to-body mass ratio suggests advanced brain function, making it an interesting subject for neurological studies and evolutionary research.



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