When I was walking on the street yesterday , I saw a dog (referred as C bellow) became so excited when it met another beautiful dog (referred as D bellow) which is much smaller .And immediately, C sniffed D's behinds enthusiasticly which made D turn around and around . And C didn't wanna quit and tried to smell D'butt continuously. This hilarious scenarios made the walking pedestrians got surrounded and watched their "fight".
I wanna see what will happen and how the dog owners will react. Unfortunately ,I was heading to someplace at that time and could not afford a stop .
Afterwards,I did a research on the INTERNET and it said " Dogs sniff butts to greet each other, much as humans do by shaking hands" . Since it is soooo common for dogs themselves, we human don't need to be so suprised about it.