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Leopard Gecko Sexing

Leopard Gecko Sexing

A growing Leopard gecko can only be accurately sexed from six to eight months of age. Larger and adult Leopard geckos have a definitive sexual dimorphism (sexes are visibly distinguishable).

The most accurate way to sex a Leopard gecko is by looking at the externally visible sex organs which are visible at the vent area on the underside of the tail base. Just behind (towards the tip of the tail) of this opening there should be two visible bulges in males (i.e. the two hemi-penises - which will make two bulges with a “hourglass” indentation in the middle) and one very slight bulge in females (i.e. one bulge in the middle of two indentations).

Most Leopard gecko males will also have a row of very distinctive femoral pores just in front of the vent. The rows forms a V-shape with pointing to the head of the gecko. A Leopard gecko with femoral pores can be sexed as a male, but animals without these pores are not always females. A female Leopard gecko will almost always be without femoral pores.

Something interesting about Leopard gecko sexing is that they have a so-called temperature-dependant sexual dimorphism. In other words the incubation temperature contributes to the sex of the baby Leopard gecko. The male to female ratio is slightly higher at warmer incubation temperatures and vice versa.

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