“…a compound called schreckstoff. Many fish species excrete schreckstoff when they are injured. This alerts the rest of the school that danger is near. In a sense, fishes can actually smell fear. Schreckstoff was first documented in 1938 by Austrian ethologist Dr. Karl von Frisch [pictured here]. Because he didn’t know the chemical makeup of […]
Hast thou seen Sinnott’s experiment with scary masks and zoo animals? This study makes tell of it: “Perception of Scary Halloween Masks by Zoo Animals and Humans,” Joan M. Sinnott [pictured here], H. Anton Speaker, Laura A. Powell, and Kelly W. Mosteller, International Journal of Comparative Psychology, 25 (2012): 83-96. (Thanks to investigator Neil Martin […]