Underwater acoustic communication in the macrophagic carnivorous larvae of Ceratophrys ornata (Anura: Ceratophryidae)
The first known monogamous amphibian species, based on genetic data, is Dendrobates imitator (Brown et al. 2010) as reported in a paper in the April issue of American Naturalist.
Acoustic signals, species diagnosis, and species concepts: the case of a new cryptic species of Leptodactylus (Amphibia, Anura, Leptodactylidae) from the Chapare region, Bolivia.
From ScienceNOW, 28 May 2008
Published at http://publishing.royalsociety.org/media/biology_letters/rsbl20080219.pdf
by Lauren Cahoon (complete article below)
"X-Men fans rejoice: Wolverine has come to life, as a frog. When the comic book warrior faces a fight, metallic blades spring forth from his hand. A new study concludes that certain African frogs are similarly equipped, having sharp, claw-shaped bones that pierce through their own fingertips when the animal is threatened.