Physalaemus nattereri

Physalaemus nattereri (common name: Cuyaba dwarf frog) is a frog native to central and southeastern Brazil and eastern Bolivia and Paraguay. It has two 'false eyes' on its rear. The 3–4 cm frog lifts its rear end when threatened, startling predators. This trait is so dangerous and intimidating because, no matter if one is looking at the front or the back of the frog, it will always appear to be staring back. If a predator does not get fooled by the eyespots, and decides to move closer, the frog can produce an unpleasant secretion that comes from glands located in the eyespots. Similar display is known from Physalaemus deimaticus.