Tragulus napu
Silhouette: T. Michael Keesey · PhyloPic
In 3 days ~60% in a week ~90%
The greater mouse-deer, greater Malay chevrotain, or napu (Tragulus napu) is a species of even-toed ungulate in the family Tragulidae found in Sumatra, Borneo, and smaller Malaysian and Indonesian islands, and in southern Myanmar, southern Thailand, and peninsular Malaysia. Its natural habitat is subtropical or tropical, moist, lowland forest.
Tragos is Greek for "goat" and –ulus in Latin means "tiny". Napu is a local name, from Malay napuh. The name "mouse-deer" refers to its small size and does not imply that it is a true deer. It is called "greater" because it is larger than other Tragulus species.
The greater mouse-deer is an even-toed ungulate. Although very small for an ungulate, the greater mouse-deer is one of the largest members of its genus. It is rivalled in size by Williamson's mouse-deer. It weighs 5 to 8 kg (11 to 18 lb). Its head-and-body length is 70 to 75 cm (2.30 to 2.46 ft) and its tail length is 8 to 10 cm (3.1 to 3.9 in). Its shoulder height is about 30 to 35 cm (12 to 14 in) It has a small, triangular head with a small, pointed, black nose and large eyes. Its long legs are as thin as a pencil. The hind legs are visibly longer... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia |
More parks will be added in future updates.
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | National Zoological Park | 🇺🇸 United States | |
| 2 | Cleveland Metroparks Zoo | 🇺🇸 United States | |
| 3 | Columbus Zoo and Aquarium | 🇺🇸 United States | |
| 4 | Bronx Zoo | 🇺🇸 United States | |
| 5 | Toledo Zoo | 🇺🇸 United States | |
| 6 | Night Safari | 🇸🇬 Singapore | |
| 7 | National Zoo of Malaysia | 🇲🇾 Malaysia | |
| 8 | Singapore Zoo | 🇸🇬 Singapore | |
| 9 | Bird Paradise | 🇸🇬 Singapore | |
| 10 | Rainforest Wild Asia | 🇸🇬 Singapore | |
| 11 | River Wonders | 🇸🇬 Singapore | |
| 12 | Central Park Zoo | 🇺🇸 United States |
Possible
About 30% of wildlife watchers report a Greater Mouse-deer sighting in Danum Valley Conservation Area on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 18th most-seen of the 26 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.
March
In that month about 50% of wildlife watchers report a Greater Mouse-deer in Danum Valley Conservation Area on a given day, against under 5% in January, April–May and July–September, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Greater Mouse-deer sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Danum Valley Conservation Area, in our data
Danum Valley Conservation Area is the only park on Wallace's Line with enough records to rate Greater Mouse-deer sightings: about 30% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Greater Mouse-deer is recorded against all the mammals logged in Danum Valley Conservation Area (15 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.
