The breeding season of G. wislizenii extends from May to June with a single clutch of 5–6 eggs being laid usually in June or July, which hatch in the late summer months of July or August.
During mating no pair bond is formed between adults.
 A single clutch is usually laid per year but in the warmer climates towards the south, it is possible for a female to lay up to two clutches per year.
Birthing and egg-laying occur in a burrow, although no nest structure is formed.
 Egg incubation is estimated to be between five and seven weeks.
Young emerge in August, when adult activity is coming to an end.
 The timing of the juvenile emergence coinciding with the cessation of adult activity may aid in the prevention of cannibalism.
The breeding season of G. wislizenii extends from May to June with a single clutch of 5–6 eggs being laid usually in June or July, which hatch in the late summer months of July or August. During mating no pair bond is formed between adults.  A single clutch is usually laid per year but in the warmer climates towards the south, it is possible for a female to lay up to two clutches per year. Birthing and egg-laying occur in a burrow, although no nest structure is formed.  Egg incubation is estimated to be between five and seven weeks. Young emerge in August, when adult activity is coming to an end.  The timing of the juvenile emergence coinciding with the cessation of adult activity may aid in the prevention of cannibalism.
Long-nosed leopard lizard