according to cracked: "Just as each human has a unique face, each dog has a unique a** stank. If you've ever wondered why dogs sniff each other's *sses on meeting, wonder no more. They don't need to see a face, just smell an *ss. It's not, however, because they want to smell the dried sh*t and fart residue around there. Dogs have two glands around their anus, and sacs that emit a fluid. That stuff tells another dog everything they need to know; the dog's sex, how healthy they are, what their diet is like, even their mood. If you think we're exaggerating, keep in mind a dog's sense of smell is 100,000 times more sensitive than a human's. To them, there's a whole autobiography written out in that other dog's *sshole. By the way, those glands are also why dogs drag their butts on the floor. Under normal conditions when a dog poops, the force of the shat is supposed to empty its anal sacs. However, some breeds (usually smaller dogs) cannot empty the sacs and they become impacted and irritated. You can have a vet or dog groomer squeeze that stuff out of there or, if you're the adventurous type and not opposed to getting knuckle deep in dog sphincter, there are do-it-yourself guides available. Since the difficulty of this task on eHow is "moderately easy," we'll assume they've never had to reach up a backwoods and homophobic bloodhound's anus. Read more: http://www.cracked.com/article/122_6-insane-dog-behaviors-explained-by-evolution/#ixzz2jEu7mcPo

by Anonymous 10 years ago