The scientific shit study. What? Too crass?

“Do you ever wonder why dogs will sometimes walk in circles before sleeping or going to the bathroom?

“Well, it has to do with some hygiene and territorial instincts that dogs have when they’re in the wild.

“It also has to do with the Earth’s magnetic field, which is crazy, and Anthony is here to tell you all about it.” – YT

The whole spin before a dog sits/poops/etc is interesting, but where is the video for that little throwaway fact?!

Humans could have possibly once seen magnetic lines? Are we too lazy to do the poop spin?