Hi,
Trapsrock, vft's actually grow in the carolinas of the USA, and they don't get up to 6 inches. Theres a video that shows a vft closing on a small tree frog, and encyclopedia encarta 96' sofware shows a frog in a small clip getting caught. Jmenprkr, it wouldn't have to be the smallest frog in the world. I have seen frogs poking around my vft's in a small, but relatively average sized frogS in my mini bogs that could easily be trapped, not the whole frog, but just its forebody.
Kevin