They say laughter and yawns are contagious.
I believe whining is also contagious.
My dog was in a kennel for a week. She is now at home. Sadly, since then, it’s the first time ever that I’ve heard her whine.
I imagine she picked it up from listening to the whining of other dogs.
It’s important that we don’t catch the “whining” habit from others.
It’s very easy to do.