Have you heard of the Yellow Dog Project?

The Yellow Dog Project is a campaign that appeared in Sweden and has already spread in several countries. It is about putting a yellow knotted tape on the leash of the dog that needs more space and in this way both the owners of other dogs and children will know that they should not approach.
There may be several reasons why it would be convenient to put the tape: for suffering from a health problem, for being injured, for being afraid, for being rehabilitated, for being in heat, for having had a bad experience or simply for not being a very friendly dog.
So if at any time you see a dog with a yellow ribbon on its leash, you know you should not approach.