It's party time when I go to the park and my dog, and I meet other dogs. I pet them and say something beautiful to the owner, but the dogs? They love to smell each other's butts!

They go round and round, like a ceremony. What are dogs thinking? Do they say to each other "nice to meet you"? Maybe, but there is a scientific explanation for us, humans, to understand why they joyfully do that.

I found a fun and exciting video from the American Chemistry Society that easily explains this: "We are getting to the bottom of one of the biggest quandaries in science: Why dogs sniff each other's butts. Turns out this behavior is just one of many interesting forms of chemical communication in the animal kingdom. Dogs use a special feature called the Jacobsen's Organ to get chemical signals from their nose sent directly to their brain. "

Is your dog social? Does he like when other dogs approach to smell his butt? I think it is like party time!