Video Description: An 8-year-old male English setter and his new 9-month-old little sister play in their front yard in Illinois. The younger puppeh zooms around wildly, then runs up to her brother, and when he gives her a playful nip on the neck, she dramatically falls over and plays dead, then hops back up and commences to continue zooming around wildly. On the video, the owners can be heard laughing at their antics.
[Details about the dogs via this news report.]