They’d discovered a new species: Scinax juruena, or the Juruena snouted tree frog. Juruena snouted tree frogs are considered “small,” reaching just over 1 inch in length, researchers said.

One frog made an “aggressive call,” consisting of pulsating sounds. A Scinax ritaleeae, or Rita Lee’s snouted treefrog, on the edge of a plant. Photos from Sabbag, A. F., shared by Pedro Marinho ...

One frog made an “aggressive call,” consisting of pulsating sounds. A Scinax ritaleeae, or Rita Lee’s snouted treefrog, on the edge of a plant. Photos from Sabbag, A. F., shared by Pedro Marinho ...

One frog made an “aggressive call,” consisting of pulsating sounds. A Scinax ritaleeae, or Rita Lee’s snouted treefrog, on the edge of a plant. Photos from Sabbag, A. F., shared by Pedro Marinho ...

One frog made an “aggressive call,” consisting of pulsating sounds. A Scinax ritaleeae, or Rita Lee’s snouted treefrog, on the edge of a plant. Photos from Sabbag, A. F., shared by Pedro Marinho ...

One frog made an “aggressive call,” consisting of pulsating sounds. A Scinax ritaleeae, or Rita Lee’s snouted treefrog, on the edge of a plant. Photos from Sabbag, A. F., shared by Pedro Marinho ...

One frog made an “aggressive call,” consisting of pulsating sounds. A Scinax ritaleeae, or Rita Lee’s snouted treefrog, on the edge of a plant. Photos from Sabbag, A. F., shared by Pedro Marinho ...

One frog made an “aggressive call,” consisting of pulsating sounds. A Scinax ritaleeae, or Rita Lee’s snouted treefrog, on the edge of a plant. Photos from Sabbag, A. F., shared by Pedro Marinho ...

One frog made an “aggressive call,” consisting of pulsating sounds. A Scinax ritaleeae, or Rita Lee’s snouted treefrog, on the edge of a plant. Photos from Sabbag, A. F., shared by Pedro Marinho ...

Some tadpoles don’t poop for the first weeks of their lives. At least, that’s the case for Eiffinger’s tree frogs (Kurixalus eiffingeri), scientists report September 22 in Ecology. Eiffinger ...

One frog made an “aggressive call,” consisting of pulsating sounds. A Scinax ritaleeae, or Rita Lee’s snouted treefrog, on the edge of a plant. Photos from Sabbag, A. F., shared by Pedro Marinho ...