These are my three Shih Tzus and they are all female. Cinnamon is the one barking, Mochi is the one with the treat and Sundae is the puppy. Cinnamon is the leader of the pack and is harassing Mochi. The puppy Sundae doesn’t really know what’s going on but takes Cinnamon’s lead and also tries barking at Mochi. At the end, she gives up and moves on to something else.. thank goodness! LOL