Heosemys grandis
Silhouette: SeismicShrimp · PhyloPic
In 3 days ~50% in a week ~80%
The giant Asian pond turtle (Heosemys grandis) inhabits rivers, streams, marshes, and rice paddies from estuarine lowlands to moderate altitudes (up to about 400 metres (1,300 ft)) throughout Cambodia and Vietnam and in parts of Laos, Malaysia, Myanmar, Thailand, and India.
Slight variations in coloration can be seen among the species. The carapace of the giant Asian pond turtle has a brown to black coloration with a distinct ridge along the center while the plastron is yellow in color. The head is gray to brown in color.
Capable of living in water or on land the giant Asian pond turtle can be located along bodies of water such as lakes, ponds, rivers, streams, and canals. The giant Asian pond turtle is omnivorous and finds food in both aquatic and terrestrial environments. Their diets consist of worms, larvae, insects, snails, deceased animals, and aquatic and terrestrial plants. Similarly to other species of turtles, the giant Asian pond turtle has developed adaptations and different techniques for capturing prey in both types of environments.
The main area of concern is the illegal capture and export of these turtles... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 2 | Khao Yai National Park | 🇹🇭 Thailand |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Kadoorie Farm and Botanic Garden | 🇭🇰 Hong Kong SAR China | |
| 2 | Songkhla Zoo | 🇹🇭 Thailand | |
| 3 | National Zoo of Malaysia | 🇲🇾 Malaysia | |
| 4 | ZooTampa | 🇺🇸 United States | |
| 5 | Saigon Zoo and Botanical Gardens | 🇻🇳 Vietnam | |
| 6 | Taiping Zoo | 🇲🇾 Malaysia | |
| 7 | 黔灵山动物园 | 🇨🇳 China | |
| 8 | A Cupulatta | 🇫🇷 France | |
| 9 | Bioparc Fuengirola | 🇪🇸 Spain | |
| 10 | Farm in the City | 🇲🇾 Malaysia | |
| 11 | Penang Bird Park | 🇲🇾 Malaysia | |
| 12 | Entopia | 🇲🇾 Malaysia | |
| 13 | Aquarium Barcelona | 🇪🇸 Spain | |
| 14 | Snake Farm of Queen Saovabha Memorial Institute | 🇹🇭 Thailand | |
| 15 | Singapore Oceanarium | 🇸🇬 Singapore | |
| 16 | Maritime Aquarium at Norwalk | 🇺🇸 United States | |
| 17 | Pata Zoo | 🇹🇭 Thailand | |
| 18 | World Aquarium | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Giant Asian Pond Turtle sighting in Cat Tien National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 26th most-seen of the 45 reptiles we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
December
In that month about 40% of wildlife watchers report a Giant Asian Pond Turtle in Cat Tien National Park on a given day, against under 5% in February–March, August and October, the lowest months. That is one of Cat Tien National Park's driest months, with about 55 mm of rain against 490 mm in July.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Giant Asian Pond Turtle sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Giant Asian Pond Turtle sightings, Cat Tien National Park has the highest daily chance: about 20%. Next come Khao Yai National Park (Thailand, about 10%).
GBIF citizen-science records
It is estimated from how often the Giant Asian Pond Turtle is recorded against all the reptiles logged in Cat Tien National Park (16 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.
