These are the bad boys of the frog world.

African Giant Pyxie Frogs(pyxiecephalus adspersus).
These guys will eat almost anything that moves in front of there big mouths including rodents, lizards and most insects. they can live their whole life on a varied diet of insects and night crawlers. an occasional treat of a rodent is welcomed by a Pyxie.
Males can exceed 9 inches SVL while females are about half that size.
Very easy to maintain and a simple 20 long tank with just moist coco fiber and a big water bowl so they can soak in is a set-up they will thrive in.
Temps should be high 70's to about 85*F to keep them feeding and happy.