Roque Chico de Salmor Giant Lizard The Roque Chico de Salmor Giant Lizard was a lizard subspecies endemic to a small islet on the Canary Islands. Initially, the only threat to this Giant Lizard was feral cat predation, but human intervention in the beginning of 20th century gave a serious jolt to the Lizard population in this area. Commercial exploitation owing to the large-scale collection of the species for scientific usage, led to depletion of the Roque Chico de Salmor Giant Lizard population to a great extent. After several attempts to revive the population failed, the species finally disappeared in late 1930s.
Round Island Burrowing Boa The Round Island Burrowing Boa, or Bolyeria, was a reptile native to the Round Island in Mauritius. The reptile endemic to hardwood forest and palm savanna had a small habitat, ranging about 1.5 to 2 square km. Limited distribution had already made it vulnerable to extinction. Furthermore overgrazing by various herbivores triggered soil erosion, which led to loss of habitat for this reptile. By the end of first half of the 20th century, Round Island Burrowing Boa had already become rare and the last sighting was reported in 1975
