Found one article which may be relevant. It's titled Animal Subjectivity: http://webcache.googleusercontent.com/search?q=cache:http://assc.d5x.insights.net.au/f

Found one article which may be relevant. It's titled Animal Subjectivity: http://webcache.googleusercontent.com/search?q=cache:http://assc.d5x.insights.net.au/files/assc/2377.pdf http://webcache.googleusercontent.com/search?q=cache:http://...