Furcifer oustaleti
Silhouette: Ferran Sayol · PhyloPic
In 3 days >90%
The Malagasy giant chameleon (Furcifer oustaleti), also known commonly as Oustalet's chameleon, is a large species of chameleon which is native throughout Madagascar, but has also been introduced near Nairobi in Kenya (though its current status there is unclear) and in Miami-Dade County in the United States. It occurs in a wide range of habitats, even among degraded vegetation within villages, but is relatively rare in the interior of primary forest.
Furcifer oustaleti is endemic to Madagascar and is found throughout the island. It inhabits a very wide range of habitats including dry deciduous forest, humid evergreen forest, montane savanna, degraded forests, agricultural areas and even urban settings. It is seldom found deep in the forest interior, preferring the forest edges instead.
With a maximum total length (tail included) of 68.5 cm (27 in), Furcifer oustaleti is generally considered the world's largest species of chameleon by this measurement. Exceptionally large Calumma parsonii (Parson's chameleon) and Trioceros melleri (Meller's chameleon) have been claimed to reach even greater lengths, but this remains unverified. F. oustaleti... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Ankarafantsika National Park | 🇲🇬 Madagascar |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Antananarivo | 🇲🇬 Madagascar |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Prague Zoo | 🇨🇿 Czechia | |
| 2 | Paris Zoological Park | 🇫🇷 France | |
| 3 | Aquarium du palais de la Porte Dorée | 🇫🇷 France | |
| 4 | Warsaw Zoo | 🇵🇱 Poland | |
| 5 | Lemurs Park | 🇲🇬 Madagascar | |
| 6 | Mandraka Reptile Farm | 🇲🇬 Madagascar | |
| 7 | Croc Farm Ivato | 🇲🇬 Madagascar | |
| 8 | herpetarium warszawskiego ZOO | 🇵🇱 Poland | |
| 9 | Rákosův pavilon | 🇨🇿 Czechia | |
| 10 | Velemlokárium | 🇨🇿 Czechia | |
| 11 | akwarium warszawskiego ZOO | 🇵🇱 Poland | |
| 12 | hipopotamiarnia i akwarium morskie warszawskiego ZOO | 🇵🇱 Poland |
Very likely
About 90% of wildlife watchers report an Oustalet's Giant Chameleon sighting in Ankarafantsika National Park on a given day, based on 108 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the most-seen of the 20 reptiles we can rate there. Over three days the chance rises to over 90%, if each day is a fresh chance.
April and July–December
In those months about 90% of wildlife watchers report an Oustalet's Giant Chameleon in Ankarafantsika National Park on a given day, against about 40% in May, the lowest month. February and March have too few records to rate.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Oustalet's Giant Chameleon sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Ankarafantsika National Park, in our data
Ankarafantsika National Park is the only park on Wallace's Line with enough records to rate Oustalet's Giant Chameleon sightings: about 90% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Oustalet's Giant Chameleon is recorded against all the reptiles logged in Ankarafantsika National Park (108 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.
