The Long Island Herpetological Society suggests placing your hand palm up in his enclosure and herding him into it.
Cradle him very gently, applying only enough pressure to keep him from falling out or wiggling free.
When your gecko is scurrying about in his tank, it's impossible to tell whether he's a he or actually a her.
But pick your pal up and inspect his underside, and you'll see some very noticeable characteristics that a girl gecko won't have and a boy will.
There are fairly distinct differences in size between most male and female turtles but these differences may not be obvious until the turtle reaches sexual maturity (and the diet can also play a role in the size of a turtle).
Warning: Your gecko will probably be spooked if you suddenly stick your hand in his enclosure and snatch him up.
The sexual organs of a male gecko are known as hemipenes.
Upon reaching sexual maturity, evidence of hemipenes develops as two bulges immediately beneath his vent, the little horizontal slit at the base of his tail.
There is no set age for puberty so try not to worry if your body changes earlier or later than your friends’.
For girls, puberty often happens between 10 and 16,1 and for boys between 10 and 18.2 Remember that changes will happen over time.