The five pupils are the Centipede, Snake, Scorpion, Lizard, and Toad. In Ireland, the viviparous lizard, the only known reptile in the country, dwells in bogland. Desert Spiny Lizard (Sceloporus Magister) - Reptiles of Arizona. The Texas spiny lizard is diurnal and arboreal. Komodo Island is home to the Komodo Dragon, the largest lizard on earth. Natural predators of magpies include various species of monitor lizard and the barking owl. Another officer wrote that the creature was more of a lizard than a serpent. We encountered the huge birds and the giant lizard, megalania. Police start a manhunt for both Spider-Man and the Lizard. The water monitor is a large species of monitor lizard. It was considered to be a giant lizard. The mountains are also home to the western fence lizard and the coastal whiptail. In polyploid obligate parthenogens like the whiptail lizard, all the offspring are female. Lizard and Pluto flee with the baby. Megalania is the largest terrestrial lizard known to have existed.