Crested gecko or leopard gecko: which one handles an unfamiliar object best?
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
The crested gecko and the leopard gecko are two beginner-friendly species often recommended side by side on Planète Pets, but their temperament around novelty isn't necessarily the same. A Spanish study published in 2023 compares exactly that: their reaction to an unfamiliar object and the physiological stress that goes with it. Our terrarium enrichment guidance is gathered in the reptile toys and enrichment section.
A comparative study on two nocturnal geckos
Gloria Fernández-Lázaro, Roberto Latorre, Juan Carlos Fontanillas Pérez and Isabel Barja published a study in 2023, in the journal Animals, on reactions to novel objects and fecal glucocorticoid metabolite levels in crested geckos (Correlophus ciliatus) and leopard geckos (Eublepharis macularius). Each individual was given an unfamiliar object in its terrarium; the researchers timed the delay before the first approach and the total time spent manipulating it, then measured fecal glucocorticoids as a marker of baseline stress.
What the comparison between the two species reveals
In both species, individuals that approached the object fastest and manipulated it longest had the lowest baseline glucocorticoid levels. A clear gap also separated the two geckos: crested geckos showed higher and far more variable glucocorticoid levels from one individual to the next than leopard geckos.
- Don't read a slow approach as a simple personality trait: the study links slower exploration to a higher baseline physiological stress level, not just individual "shyness".
- Expect more individual variability in crested geckos than in leopard geckos when facing a new object, and adjust how enrichment is introduced case by case rather than on a fixed schedule.
- Introduce a new object gradually, letting the gecko explore it at its own pace, rather than changing the whole setup in one go.
- Keep this species difference in mind if both live in the same household: a crested gecko that's more reserved than a neighbouring leopard gecko isn't necessarily worse off, just physiologically more variable around novelty.
This link between exploration and baseline stress lines up with our existing guidance on leopard gecko enrichment, including the five enrichment types tested in this species. See also our guide to setting up a crested gecko terrarium.
Frequently asked questions
Is a crested gecko that doesn't approach an object right away necessarily stressed?
Not necessarily in an acute way: the study measures a correlation with baseline stress, not a one-off reaction to the object itself. An individual may simply have a more cautious temperament.
Is the crested gecko a more stressed species than the leopard gecko in captivity?
The study finds higher and more variable glucocorticoid levels in crested geckos, but that doesn't support a conclusion of overall worse welfare: other factors, such as nocturnal lifestyle or individual sensitivity, could explain the gap.
Should new objects be avoided in the terrarium?
No: the study instead suggests that easier exploration goes with lower baseline stress, which argues for regular enrichment rather than avoiding it. Find all our guides on the reptile hub.
In our shop, for this use: Stick-on digital thermometer for aquarium and terrarium glass (€18.90) · the whole shop
This guide is part of Planète Pets’s Reptiles universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.
