The paper: http://www.pnas.org/content/105/36/13451.full.pdf&title=Magnetic%20alignment%20in%20grazing%20and%20resting%20cattle%20and%20deer http://www.pnas.or

The paper: http://www.pnas.org/content/105/36/13451.full.pdf&title=Magnetic%20alignment%20in%20grazing%20and%20resting%20cattle%20and%20deer http://www.pnas.org/content/105/36/13451.full.pdf&title=...