Home > Animals & Plants > Why Do Dogs Smell Each Other’s Butt? Why Do Dogs Smell Each Other’s Butt? Animals & Plants Share on Pinterest A dog’s sense of smell is at least 10,000 times more sensitive than yours or mine; so why do they use this increased sense of picking out odors to smell each other’s butts? Share on Pinterest Related Posts 15 plants that eat animals 9 Weird Ways Animals Communicate 25 Amazing Facts You Didn’t Know About Animals Did Humans Evolve From Apes? Top 10 Facts – Animals