Will over at Doghouse Diaries has four doctorates in “dogsareawesomeology” and used all that knowledge to create an infographic on the workings of our canine companions including their cyclical inside-outside thoughts, their irrational fears, and which end the drool comes out of.

See the Science of Dogs after the jump.

To see a bigger version of the infographic, click here.

[via Cheezburger]