Not really rare, but i used to have a couple of these: -
Leopard Geckos. Beautiful, docile creatures. Mine were so tame and each had their own character, they used to climb up my arm and sit on the back of my neck for the warmth.
I also had one of these, a golden gecko, in the same tank. The suckers on its feet meant it could grip to the glass, which used to confuse the Leopard Geckos!

The shop where i bought their food from had a pet Comodo Dragon
