Rhacodactylus leachianus
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The New Caledonian Giant Gecko or Leach's Giant Gecko (Rhacodactylus leachianus), first described by Cuvier in 1829, is the largest of the Rhacodactylus geckos. At 14 inches (360 mm) total length, it is one of the largest geckos in the world, if not the largest. R. leachianus is currently being evaluated for protected status by CITES. There are three sub-species of R. leachianus: R. l. aubrianus, R. l. henkeli (first described by Seipp and Obst in 1994), and R. l. leachianus.
R. leachianus is a nocturnal arboreal gecko. It makes its home in the highest treetops on the island of New Caledonia. Its range includes all of the southern and eastern portions of the main island as well as several of the smaller islands in the group.
This is a large, heavy bodied gecko. Its skin appears too loose for its body and it has small, stumpy tail. Female R. leachianus lay two eggs, which hatch 60-90 days after they are laid.
R. leachianus feeds on insects and fruit. It will also occasionally consume smaller lizards and in captivity may eat newborn mice. (though this is not recommended for the main portion of the diet as it may cause a blinding build up of lipids on the gecko's eyes.)
In captivity, males should be housed separately or as a part of a breeding pair or trio with females. Males housed together will often fight. Females are social and can be housed together. This gecko requires a large, spacious enclosure and as is the case with all arboreal species, the cage should be vertically oriented.
Many of the locals in New Caledonia call this gecko "the devil in the trees" because of the growling noises it makes.