How Long Are Reptiles Pregnant?

How Long Are Reptiles Pregnant? On average, temperate-zone reptiles have incubations or pregnancies of 8–12 weeks. Tropical species tend to have similar incubation periods; however, incubations of some species may last nearly one year or longer (as in the Fijian iguana [Brachylophus fasciatus]). How long does it take for a lizard to give birth? In