Phyllomedusa sauvagii
This frog makes a chemicals in its skin.  The chemicals are toxins, or poisons.  When another animal tries to eat the frog, it gets the poison in its mouth.  Scientists think humans could use some of these chemicals to kill dangerous microbes.  Phylloseptin-1 is one of the chemicals that the frog makes.  Scientists studied Phylloseptin-1 and saw it could kill Staphylococcus aureus bacteria, even after the bacteria had built a biofilm to protect themselves.  Another chemical, Phylloseptin-S, can kill parasites, for example Leishmania infantum, Leishmania braziliensis, and Leishmania major. The chemical Sauvagine is already used in medicine because it works very much like urotensin I, which can help human hearts and help the chemicals in the human body work well.