Once I finally realized that the place was eerily silent, I turned around from the book I had been reading. These two guys usually play like human brothers-- one minute chasing each other around, then all of a sudden one gets irritated with the other, "Stop it! STOP IT! MOOOOOOMMMM, he's hitting me!" and a vocal argument breaks out between them. When I turned around though, the two were playing cooperative tug-of-war. No vocalizations, just calm back and forth pulling. The only issue? They were playing with the socks I had just taken off.
The culprits, looking very pleased with themselves.
In the end I decided to let them have at it, since I value good dog-on-dog socialization more than I value their good decision making on which of my belongings need to be destroyed and which don't!