Dogs are sensitive to small variations of the Earth's magnetic field
Frontiers in Zoology (2013) - Comments
pubmed: 24370002  doi: 10.1186/1742-9994-10-80  issn: 1742-9994 

Vlastimil Hart, Petra Nováková, Erich Pascal Malkemper, Sabine Begall, Vladimír Hanzal, Miloš Ježek, Tomáš Kušta, Veronika Němcová, Jana Adámková, Kateřina Benediktová, Jaroslav Červený, Hynek Burda