In this video about electric dipoles, at 6:14, the speaker mentions that all of the red lines will loop back into negative (blue) charge, but I don't see how this is possible. Specifically, he gives an example with a +5 and a -5 charge. At some distance from the positive charge, there's a vector pointing towards the upper-left side. At that point, it's true that there's another vector pointing backwards in the direction of the blue charge, but I don't see how would it loop back into the blue in the end.
(Unfortunately, I couldn't find a simulation that lets me zoom out to see the picture from very far away. I checked the author's github page but I can't zoom out there either.)