When I had my pack of 3 girls they were very bonded, but they never did that.
I agree with Bluebells, it's part of canine communication, just like when two strange dogs meet, they smell each others butts this is the way dogs gathering information and say hello to other dogs.
__________________ Joan, mom to Cody  RIP Matese  Schnae  Kajon Kia  forever in my  A House Is Not A Home Without A Dog |