Candling with a bright light can reveal whether an egg is developing
A week or two after laying, a network of blood vessels becomes visible in a fertile egg under candling, while an infertile egg typically stays clear or turns yellow.
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Most active at dawn and dusk when temperatures in their native Pakistan and Afghanistan are ideal.
A widespread misconception is that the tail acts like a camel's hump storing water.
Autotomy — voluntary tail shedding — is a defence mechanism.
Unlike most gecko species which use van der Waals forces to climb smooth surfaces, leopard geckos have conventional claws.
The moveable eyelid is unusual among geckos.
Hold your gecko up to a light source and look through one ear opening — you can see light through the other side.