Exilisciurus exilis
Silhouette: Joseph Smit · PhyloPic
In 3 days ~60% in a week ~90%
The least pygmy squirrel (Exilisciurus exilis), also known as the plain pygmy squirrel, is a species of rodent in the family Sciuridae. This plain olive-brown squirrel is endemic to forests, mostly below an altitude of 750 m (2,500 ft) but locally significantly higher, on the Southeast Asian islands of Borneo, Sumatra and Banggi. Together with the African pygmy squirrel, the least pygmy squirrel is the smallest squirrel in the world, having a total length of 10–14 cm (3.9–5.5 in) and a weight of 12–26 g (0.42–0.92 oz). Wikipedia →
Call0:11
Malaysia · 2011
© Marc Anderson · XC1161598 · CC BY-NC-ND 4.0
Alarm call0:04
Malaysia · 2023
© Daan Drukker · XC959725 · CC BY-NC-ND 4.0
Recording0:07
Malaysia · 2013
© Peter de Rouw · Observation.org, Nature data from around the World · CC BY-NC-ND 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 2 | Kinabalu Park | 🇲🇾 Malaysia | |
| 3 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 4 | Sepilok | 🇲🇾 Malaysia |
Possible
About 30% of wildlife watchers report a Least Pygmy Squirrel sighting in Sepilok on a given day, based on 34 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 11th most-seen of the 23 mammals we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
September
In that month about 40% of wildlife watchers report a Least Pygmy Squirrel in Sepilok on a given day, against about 20% in March, May, July–August and November–January, the lowest months.
Between 3 and 6 am
Across all the parks we cover, that three-hour window holds the most Least Pygmy Squirrel sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
4th of 4
Of the 4 parks where we can rate Least Pygmy Squirrel sightings, Sepilok ranks 4th at about 30%. The best odds are in Danum Valley Conservation Area (Malaysia, about 40%), Kinabalu Park (Malaysia, about 30%) and Kinabatangan Wildlife Sanctuary (Malaysia, about 30%). All parks ranked.
Same family: Sciuridae
The closest relatives of the Least Pygmy Squirrel that you can see in Sepilok (family Sciuridae, Squirrels) are Prevost's Squirrel (about 70%), Red Giant Flying Squirrel (about 60%) and Pale Giant Squirrel (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Least Pygmy Squirrel is recorded against all the mammals logged in Sepilok (34 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
