This could be the heartwarming video of the week.
Benson, a deaf black lab, can't hear a whistle when his owner all him inside from the yard. His pal Buffy, however, can. So what does Buffy do? Buffy gently grabs Benson by the collar in order to show him when it's time to go in.
Watch how Buffy is trained to do it here:
We don't know much about the duo, just what we've seen from the video and read on its YouTube description. If you do, let us know.