Seen here looking suspiciously like the girl I had a crush on in high school does now (burn Allison -- I'm glad you turned me down for Homecoming!), the Japanese Otton frog has a fifth "false" finger with a hidden bone blade inside for slashing male opponents and positioning females during mating. Call me crazy, but I have a strict 'NO KNIVES' policy in the bedroom. Aromatherapy candles are still a go.
"While the pseudo-thumb may have evolved for mating, it is clear that they're now used for combat," Iwai explained in a statement. "The males demonstrated a jabbing response with the thumb when they were picked up, and the many scars on the male spines provided evidence of fighting."
Hell yeah, fighting frogs! "Battletoads." YES -- I knew there was a reason I kept you around. "Because I'm so clever and witty?" No, because you're so humble. GET OUT OF MY SIGHT, YOU DISGUST ME.
Thanks to Lar, who tried to tell me Wolverine has been out in the forest fathering frog babies.