Geckos, little lizards similar to those in Hawaii, are abundant in Vietnam. They are everywhere in your house. They seem to find any tiny crevice to enter your house and then squick all night. Quite pleasant actually. Also, they tend to go after mosquitos. Smokey has decided to take it upon himself to rid the house of the geckos. I have never seen him kill one but my former housemate has seen him eat a gecko.
Here is Smokey stalking a Gecko. I am not sure if he got it.
(The little tiny speck on the upper right of Smokey on the wall is the gecko)