Most prolific egg-laying lizard

The species of lizard that is most prolific at egg-laying is Meller's chameleon Trioceros [aka Chamaeleo] melleri, which is native to the savannahs and interior mountains of East Africa (Malawi, Mozambique and Tanzania). This notably large species of chameleon (the largest to inhabit mainland Africa – there are larger ones only on the island of Madagascar) lays a single clutch of up to 80 eggs in a given year. The stress levels of this species are readily discernable externally by virtue of its skin colour and patterning, which pass through a series of different versions as its stress levels increase. It also changes colour when sun-basking, with the side of its body facing towards the sun becoming much darker than the side facing away from the sun.