We
"At first, we would present the mouse to one head and it would take it, but then the other head would grab it and they'd fight. So I touched the non-feeding head gently with a cold metal instrument, and it would draw back. Eventually, I only had to be in the room, and the non-feeding head would behave."
Louis Schonnenschein, Jan 2006 (reported in the New Scientist)
photograph
Louis Schonnenschein, Jan 2006 (reported in the New Scientist)
photograph
