Animal field guide
Giant Day Gecko
Phelsuma grandis
One of the largest day geckos, a vivid green lizard of northern Madagascar that, unlike most geckos, lives in full daylight. Round pupils and good colour vision suit a life spent basking, hunting and signalling to rivals on sunlit trunks.
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Get AnimalDexGiant Day Gecko at a glance
Reptile · Sub-Saharan Africa · Humid lowland and coastal forest · Relatively common
Known for: Bright green body up to about 30 centimetres long, Red stripe from the nostril to the eye, Red spots or bars on the back, Pale whitish or yellowish underside
Animal field guide
Giant Day Gecko
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One of the largest day geckos, a vivid green lizard of northern Madagascar that, unlike most geckos, lives in full daylight. Round pupils and good colour vision suit a life spent basking, hunting and signalling to rivals on sunlit trunks.
Native range
Natural range, not this capture location
Humid lowland and coastal forest, forest edges, plantations and villages in northern Madagascar, especially on smooth-trunked trees, palms, banana plants and house walls with good sun exposure.
Search near meAnimalDex stats
Dominance
25
Speed
30
Size
15
Intelligence
28
Rarity
35%
Total
133
Size scale
STEP 2 · PROVE IT
STEP 3 · BATTLE & FUSE
Understand the animal
Understand the Giant Day Gecko
Factual biology first: what this animal is like, where it lives, how it survives, and why those traits exist.
01
Introduction to Giant Day Gecko
One of the largest day geckos, a vivid green lizard of northern Madagascar that, unlike most geckos, lives in full daylight. Round pupils and good colour vision suit a life spent basking, hunting and signalling to rivals on sunlit trunks.
How to identify a Giant Day Gecko
- Bright green body up to about 30 centimetres long
- Red stripe from the nostril to the eye
- Red spots or bars on the back
- Pale whitish or yellowish underside
- Broad adhesive toe pads
Why Giant Day Gecko are interesting
- Its skin can darken or dull when it is cold, stressed or has lost a fight.
- It was long treated as a subspecies of the Madagascar day gecko and was raised to a full species in 2007.
- Males defend a trunk or patch of wall against other males and may fight an intruder that stays.
- Introduced populations have become established in southern Florida, where escaped pets have bred in the wild.
02
Adaptations and biological abilities
03
Why does Giant Day Gecko behave this way?
- Bright green body up to about 30 centimetres long
- Red stripe from the nostril to the eye
- Red spots or bars on the back
- Pale whitish or yellowish underside
- Broad adhesive toe pads
Active by day, basking in the morning sun before feeding. At night it sleeps in tree hollows, leaf axils, bark crevices or gaps in buildings.
04
Why Humid lowland and coastal forest?
Habitat: Humid lowland and coastal forest, forest edges, plantations and villages in northern Madagascar, especially on smooth-trunked trees, palms, banana plants and house walls with good sun exposure.
Native range: Sub-Saharan Africa
Native range
Natural range, not this specific capture location.
Humid lowland and coastal forest, forest edges, plantations and villages in northern Madagascar, especially on smooth-trunked trees, palms, banana plants and house walls with good sun exposure.
05
Why this diet?
06
Activity, rest, and lifespan
Active by day, basking in the morning sun before feeding. At night it sleeps in tree hollows, leaf axils, bark crevices or gaps in buildings.
Around 10 to 20 years in captivity; wild lifespan has not been measured and is probably shorter.
07
Giant Day Gecko reproduction
Females lay clutches of usually 2 hard-shelled eggs, several times a season, in sheltered crevices or leaf axils. Incubation lasts roughly 45 to 75 days depending on temperature, and hatchlings are independent at once.
Males are larger, with a broader head, well-developed pores on the underside of the thighs and bulges at the tail base; females are smaller and often carry calcium sacs on the neck.
08
Predators, threats, and defense
09
Conservation and rarity
Rarity: Relatively common · 35/100. AnimalDex canonical rarity score: 35/100, maintained by the live indexed species profile.
- Observe from a respectful distance and avoid changing the animal's behavior.
- Do not block feeding, shelter, nesting, or travel routes.
- Use a live camera capture without handling or staging wildlife.
Speak to the animal
Speak to the Giant Day Gecko
It answers as itself: ask about how it lives, or bring it something of yours and hear what it would do, from its own Power.
Anonymous: 3/day. Signed-in: 10/day. Pro: 100/day.
Compare
Compare the Giant Day Gecko
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Battled in the Arena
No one has taken a Giant Day Gecko into an Arena battle yet. Battles players fight with this animal in the AnimalDex app show up here.
Where to find them
Where to find Giant Day Gecko
To find Giant Day Gecko in the wild, focus on the exact habitat patches that match its body design and daily behavior, not just the broad country where it exists. You usually do better by working one good piece of habitat inside sub-Saharan Africa than by covering too much ground.
- Forest edge, canopy gaps, fruiting trees, or shaded trails where cover and food meet
- Headlands, reef edges, island colonies, tidal channels, or productive coastal water
- Sunlit logs, exposed branches, warm rocks, or regular perch sites used for scanning
Scientific name
Phelsuma grandis
Category
Reptile
Habitat
Humid lowland and coastal forest, forest edges, plantations and villages in northern Madagascar, especially on smooth-trunked trees, palms, banana plants and house walls with good sun exposure.
Rarity
Relatively common · 35/100
Native range
Sub-Saharan Africa
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