Several years ago a pair of fox in my locale started 'working' does with multiple fawns. They work on divide and conquer - separate the fawns and drive them further apart until the mother can no longer protect both fawns. At that point one becomes dinner. That year no does in this area raised multiple fawns. They work the same gambit on geese. The dog fox will lure the gander further and further away until the vixen can grab a gosling or sneak up from behing and grab the gander. Part of a video or a simple picture does not tell the complete story.