Science of Dogs, 14 Jun 2015 http://link.springer.com/article/10.1007/s10071-015-0852-6?no-access=true
Equine Health Studies Program at the LSU School of Veterinary Medicine, 27 Feb 2015 Interesting findings in Icelandic Horses - http://www.ncbi.nlm.nih.gov/pubmed/25716720