A recent and on-going study notes that dogs tend to align their bodies along a north-south axis when defecating or urinating. Preliminary research suggests that dogs may have an internal compass to sense the direction of Magnetic North. You may have observed your own dog twirling to and fro for no apparent reason prior to 'going about their business'.
It's secure to download Essen Dog Study. Fundy Android is the developer of this application that can be found in the Tools category. The average user rating of the app is 2.3.